Home / 28,218.90-42,276.42-17,686.92

Finding the Fourth Proportional to 28,218.90, 42,276.42 and 17,686.92

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Solution

The fourth proportional to 28,218.90, 42,276.42 and 17,686.92 is: 26,497.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,218.90 : 42,276.42 = 17,686.92 : x
  2. Step 2: Convert to fraction form
    28,218.90/42,276.42 = 17,686.92/x
  3. Step 3: Cross multiply
    28,218.90x = 42,276.42 × 17,686.92
  4. Step 4: Simplify right side
    28,218.90x = 747,739,658.43
  5. Step 5: Solve for x
    x = 747,739,658.43/28,218.90
  6. Step 6: Final answer
    x = 26,497.83

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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.