Home / 18,689.61-28,029.63-5,538.92

Finding the Fourth Proportional to 18,689.61, 28,029.63 and 5,538.92

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Solution

The fourth proportional to 18,689.61, 28,029.63 and 5,538.92 is: 8,306.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,689.61 : 28,029.63 = 5,538.92 : x
  2. Step 2: Convert to fraction form
    18,689.61/28,029.63 = 5,538.92/x
  3. Step 3: Cross multiply
    18,689.61x = 28,029.63 × 5,538.92
  4. Step 4: Simplify right side
    18,689.61x = 155,253,738.05
  5. Step 5: Solve for x
    x = 155,253,738.05/18,689.61
  6. Step 6: Final answer
    x = 8,306.95

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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.