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Finding the Fourth Proportional to 19,902.62, 29,854.01 and 18,904.91

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Solution

The fourth proportional to 19,902.62, 29,854.01 and 18,904.91 is: 28,357.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,902.62 : 29,854.01 = 18,904.91 : x
  2. Step 2: Convert to fraction form
    19,902.62/29,854.01 = 18,904.91/x
  3. Step 3: Cross multiply
    19,902.62x = 29,854.01 × 18,904.91
  4. Step 4: Simplify right side
    19,902.62x = 564,387,494.09
  5. Step 5: Solve for x
    x = 564,387,494.09/19,902.62
  6. Step 6: Final answer
    x = 28,357.44

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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.