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Finding the Fourth Proportional to 19,755.60, 29,642.10 and 10,393.47

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Solution

The fourth proportional to 19,755.60, 29,642.10 and 10,393.47 is: 15,594.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,755.60 : 29,642.10 = 10,393.47 : x
  2. Step 2: Convert to fraction form
    19,755.60/29,642.10 = 10,393.47/x
  3. Step 3: Cross multiply
    19,755.60x = 29,642.10 × 10,393.47
  4. Step 4: Simplify right side
    19,755.60x = 308,084,277.09
  5. Step 5: Solve for x
    x = 308,084,277.09/19,755.60
  6. Step 6: Final answer
    x = 15,594.78

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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.