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Finding the Fourth Proportional to 18,250.52, 27,421.90 and 17,512.40

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Solution

The fourth proportional to 18,250.52, 27,421.90 and 17,512.40 is: 26,312.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,250.52 : 27,421.90 = 17,512.40 : x
  2. Step 2: Convert to fraction form
    18,250.52/27,421.90 = 17,512.40/x
  3. Step 3: Cross multiply
    18,250.52x = 27,421.90 × 17,512.40
  4. Step 4: Simplify right side
    18,250.52x = 480,223,429.47
  5. Step 5: Solve for x
    x = 480,223,429.47/18,250.52
  6. Step 6: Final answer
    x = 26,312.87

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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.