Home / 15,306,758,507.86-21,123,326,565.35-8,266,228,139.86

Finding the Fourth Proportional to 15,306,758,507.86, 21,123,326,565.35 and 8,266,228,139.86

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Solution

The fourth proportional to 15,306,758,507.86, 21,123,326,565.35 and 8,266,228,139.86 is: 11,407,394,738.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,306,758,507.86 : 21,123,326,565.35 = 8,266,228,139.86 : x
  2. Step 2: Convert to fraction form
    15,306,758,507.86/21,123,326,565.35 = 8,266,228,139.86/x
  3. Step 3: Cross multiply
    15,306,758,507.86x = 21,123,326,565.35 × 8,266,228,139.86
  4. Step 4: Simplify right side
    15,306,758,507.86x = 174,610,236,461,887,356,928
  5. Step 5: Solve for x
    x = 174,610,236,461,887,356,928/15,306,758,507.86
  6. Step 6: Final answer
    x = 11,407,394,738.23

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.