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Finding the Fourth Proportional to 19,988.76, 29,983.28 and 6,841.24

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Solution

The fourth proportional to 19,988.76, 29,983.28 and 6,841.24 is: 10,261.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,988.76 : 29,983.28 = 6,841.24 : x
  2. Step 2: Convert to fraction form
    19,988.76/29,983.28 = 6,841.24/x
  3. Step 3: Cross multiply
    19,988.76x = 29,983.28 × 6,841.24
  4. Step 4: Simplify right side
    19,988.76x = 205,122,814.47
  5. Step 5: Solve for x
    x = 205,122,814.47/19,988.76
  6. Step 6: Final answer
    x = 10,261.91

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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.