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Finding the Fourth Proportional to 15,785,805, 21,784,410.94 and 8,542,461

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Solution

The fourth proportional to 15,785,805, 21,784,410.94 and 8,542,461 is: 11,788,596.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,785,805 : 21,784,410.94 = 8,542,461 : x
  2. Step 2: Convert to fraction form
    15,785,805/21,784,410.94 = 8,542,461/x
  3. Step 3: Cross multiply
    15,785,805x = 21,784,410.94 × 8,542,461
  4. Step 4: Simplify right side
    15,785,805x = 186,092,480,862,923.34
  5. Step 5: Solve for x
    x = 186,092,480,862,923.34/15,785,805
  6. Step 6: Final answer
    x = 11,788,596.20

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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.