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Finding the Fourth Proportional to 19,987.83, 29,990.59 and 10,497.92

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Solution

The fourth proportional to 19,987.83, 29,990.59 and 10,497.92 is: 15,751.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,987.83 : 29,990.59 = 10,497.92 : x
  2. Step 2: Convert to fraction form
    19,987.83/29,990.59 = 10,497.92/x
  3. Step 3: Cross multiply
    19,987.83x = 29,990.59 × 10,497.92
  4. Step 4: Simplify right side
    19,987.83x = 314,838,638.38
  5. Step 5: Solve for x
    x = 314,838,638.38/19,987.83
  6. Step 6: Final answer
    x = 15,751.52

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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.