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Finding the Fourth Proportional to 17,646.79, 26,343.25 and 15,120.78

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Solution

The fourth proportional to 17,646.79, 26,343.25 and 15,120.78 is: 22,572.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,646.79 : 26,343.25 = 15,120.78 : x
  2. Step 2: Convert to fraction form
    17,646.79/26,343.25 = 15,120.78/x
  3. Step 3: Cross multiply
    17,646.79x = 26,343.25 × 15,120.78
  4. Step 4: Simplify right side
    17,646.79x = 398,330,487.74
  5. Step 5: Solve for x
    x = 398,330,487.74/17,646.79
  6. Step 6: Final answer
    x = 22,572.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.