Home / 28,288.71-39,064.68-18,240.66

Finding the Fourth Proportional to 28,288.71, 39,064.68 and 18,240.66

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Solution

The fourth proportional to 28,288.71, 39,064.68 and 18,240.66 is: 25,189.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,288.71 : 39,064.68 = 18,240.66 : x
  2. Step 2: Convert to fraction form
    28,288.71/39,064.68 = 18,240.66/x
  3. Step 3: Cross multiply
    28,288.71x = 39,064.68 × 18,240.66
  4. Step 4: Simplify right side
    28,288.71x = 712,565,545.89
  5. Step 5: Solve for x
    x = 712,565,545.89/28,288.71
  6. Step 6: Final answer
    x = 25,189.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.