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Finding the Fourth Proportional to 39,902.69, 59,862.69 and 19,922.93

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Solution

The fourth proportional to 39,902.69, 59,862.69 and 19,922.93 is: 29,888.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,902.69 : 59,862.69 = 19,922.93 : x
  2. Step 2: Convert to fraction form
    39,902.69/59,862.69 = 19,922.93/x
  3. Step 3: Cross multiply
    39,902.69x = 59,862.69 × 19,922.93
  4. Step 4: Simplify right side
    39,902.69x = 1,192,639,883.17
  5. Step 5: Solve for x
    x = 1,192,639,883.17/39,902.69
  6. Step 6: Final answer
    x = 29,888.71

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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.