Home / 18,488.39-27,728.53-5,337.90

Finding the Fourth Proportional to 18,488.39, 27,728.53 and 5,337.90

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Solution

The fourth proportional to 18,488.39, 27,728.53 and 5,337.90 is: 8,005.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,488.39 : 27,728.53 = 5,337.90 : x
  2. Step 2: Convert to fraction form
    18,488.39/27,728.53 = 5,337.90/x
  3. Step 3: Cross multiply
    18,488.39x = 27,728.53 × 5,337.90
  4. Step 4: Simplify right side
    18,488.39x = 148,012,106.94
  5. Step 5: Solve for x
    x = 148,012,106.94/18,488.39
  6. Step 6: Final answer
    x = 8,005.68

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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.