Home / 21,781.26-30,099-17,800.92

Finding the Fourth Proportional to 21,781.26, 30,099 and 17,800.92

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Solution

The fourth proportional to 21,781.26, 30,099 and 17,800.92 is: 24,598.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,781.26 : 30,099 = 17,800.92 : x
  2. Step 2: Convert to fraction form
    21,781.26/30,099 = 17,800.92/x
  3. Step 3: Cross multiply
    21,781.26x = 30,099 × 17,800.92
  4. Step 4: Simplify right side
    21,781.26x = 535,789,891.08
  5. Step 5: Solve for x
    x = 535,789,891.08/21,781.26
  6. Step 6: Final answer
    x = 24,598.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.