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Finding the Fourth Proportional to 18,750.62, 28,126.08 and 5,603.11

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Solution

The fourth proportional to 18,750.62, 28,126.08 and 5,603.11 is: 8,404.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,750.62 : 28,126.08 = 5,603.11 : x
  2. Step 2: Convert to fraction form
    18,750.62/28,126.08 = 5,603.11/x
  3. Step 3: Cross multiply
    18,750.62x = 28,126.08 × 5,603.11
  4. Step 4: Simplify right side
    18,750.62x = 157,593,449.79
  5. Step 5: Solve for x
    x = 157,593,449.79/18,750.62
  6. Step 6: Final answer
    x = 8,404.70

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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.