Home / 18,488.40-27,728.49-5,337.90

Finding the Fourth Proportional to 18,488.40, 27,728.49 and 5,337.90

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Solution

The fourth proportional to 18,488.40, 27,728.49 and 5,337.90 is: 8,005.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,488.40 : 27,728.49 = 5,337.90 : x
  2. Step 2: Convert to fraction form
    18,488.40/27,728.49 = 5,337.90/x
  3. Step 3: Cross multiply
    18,488.40x = 27,728.49 × 5,337.90
  4. Step 4: Simplify right side
    18,488.40x = 148,011,906.77
  5. Step 5: Solve for x
    x = 148,011,906.77/18,488.40
  6. Step 6: Final answer
    x = 8,005.66

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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.