Home / 21,167,999.70-31,751,999.55-8,384,255.70

Finding the Fourth Proportional to 21,167,999.70, 31,751,999.55 and 8,384,255.70

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Solution

The fourth proportional to 21,167,999.70, 31,751,999.55 and 8,384,255.70 is: 12,576,383.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,167,999.70 : 31,751,999.55 = 8,384,255.70 : x
  2. Step 2: Convert to fraction form
    21,167,999.70/31,751,999.55 = 8,384,255.70/x
  3. Step 3: Cross multiply
    21,167,999.70x = 31,751,999.55 × 8,384,255.70
  4. Step 4: Simplify right side
    21,167,999.70x = 266,216,883,213,484.94
  5. Step 5: Solve for x
    x = 266,216,883,213,484.94/21,167,999.70
  6. Step 6: Final answer
    x = 12,576,383.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.