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Finding the Fourth Proportional to 19,892.85, 29,839.28 and 9,356.32

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Solution

The fourth proportional to 19,892.85, 29,839.28 and 9,356.32 is: 14,034.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,892.85 : 29,839.28 = 9,356.32 : x
  2. Step 2: Convert to fraction form
    19,892.85/29,839.28 = 9,356.32/x
  3. Step 3: Cross multiply
    19,892.85x = 29,839.28 × 9,356.32
  4. Step 4: Simplify right side
    19,892.85x = 279,185,805.47
  5. Step 5: Solve for x
    x = 279,185,805.47/19,892.85
  6. Step 6: Final answer
    x = 14,034.48

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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.