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Finding the Fourth Proportional to 17,139.68, 25,657.68 and 15,843.68

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Solution

The fourth proportional to 17,139.68, 25,657.68 and 15,843.68 is: 23,717.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,139.68 : 25,657.68 = 15,843.68 : x
  2. Step 2: Convert to fraction form
    17,139.68/25,657.68 = 15,843.68/x
  3. Step 3: Cross multiply
    17,139.68x = 25,657.68 × 15,843.68
  4. Step 4: Simplify right side
    17,139.68x = 406,512,071.46
  5. Step 5: Solve for x
    x = 406,512,071.46/17,139.68
  6. Step 6: Final answer
    x = 23,717.60

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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.