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Finding the Fourth Proportional to 10,935.36, 16,387.92 and 9,470.88

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Solution

The fourth proportional to 10,935.36, 16,387.92 and 9,470.88 is: 14,193.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,935.36 : 16,387.92 = 9,470.88 : x
  2. Step 2: Convert to fraction form
    10,935.36/16,387.92 = 9,470.88/x
  3. Step 3: Cross multiply
    10,935.36x = 16,387.92 × 9,470.88
  4. Step 4: Simplify right side
    10,935.36x = 155,208,023.77
  5. Step 5: Solve for x
    x = 155,208,023.77/10,935.36
  6. Step 6: Final answer
    x = 14,193.22

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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.