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Finding the Fourth Proportional to 19,761.74, 29,654.29 and 7,290.53

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Solution

The fourth proportional to 19,761.74, 29,654.29 and 7,290.53 is: 10,940.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,761.74 : 29,654.29 = 7,290.53 : x
  2. Step 2: Convert to fraction form
    19,761.74/29,654.29 = 7,290.53/x
  3. Step 3: Cross multiply
    19,761.74x = 29,654.29 × 7,290.53
  4. Step 4: Simplify right side
    19,761.74x = 216,195,462.92
  5. Step 5: Solve for x
    x = 216,195,462.92/19,761.74
  6. Step 6: Final answer
    x = 10,940.10

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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.