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Finding the Fourth Proportional to 15,785,801, 21,784,405.42 and 8,542,457

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Solution

The fourth proportional to 15,785,801, 21,784,405.42 and 8,542,457 is: 11,788,590.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,785,801 : 21,784,405.42 = 8,542,457 : x
  2. Step 2: Convert to fraction form
    15,785,801/21,784,405.42 = 8,542,457/x
  3. Step 3: Cross multiply
    15,785,801x = 21,784,405.42 × 8,542,457
  4. Step 4: Simplify right side
    15,785,801x = 186,092,346,570,916.97
  5. Step 5: Solve for x
    x = 186,092,346,570,916.97/15,785,801
  6. Step 6: Final answer
    x = 11,788,590.68

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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.