Home / 20,776,656.48-28,671,285.42-11,357,028.78

Finding the Fourth Proportional to 20,776,656.48, 28,671,285.42 and 11,357,028.78

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Solution

The fourth proportional to 20,776,656.48, 28,671,285.42 and 11,357,028.78 is: 15,672,426.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,776,656.48 : 28,671,285.42 = 11,357,028.78 : x
  2. Step 2: Convert to fraction form
    20,776,656.48/28,671,285.42 = 11,357,028.78/x
  3. Step 3: Cross multiply
    20,776,656.48x = 28,671,285.42 × 11,357,028.78
  4. Step 4: Simplify right side
    20,776,656.48x = 325,620,613,674,534.38
  5. Step 5: Solve for x
    x = 325,620,613,674,534.38/20,776,656.48
  6. Step 6: Final answer
    x = 15,672,426.12

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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.