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Finding the Fourth Proportional to 18,337.20, 27,500.40 and 7,240.20

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Solution

The fourth proportional to 18,337.20, 27,500.40 and 7,240.20 is: 10,858.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,337.20 : 27,500.40 = 7,240.20 : x
  2. Step 2: Convert to fraction form
    18,337.20/27,500.40 = 7,240.20/x
  3. Step 3: Cross multiply
    18,337.20x = 27,500.40 × 7,240.20
  4. Step 4: Simplify right side
    18,337.20x = 199,108,396.08
  5. Step 5: Solve for x
    x = 199,108,396.08/18,337.20
  6. Step 6: Final answer
    x = 10,858.17

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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.