Home / 25,387.38-35,035.79-15,315.61

Finding the Fourth Proportional to 25,387.38, 35,035.79 and 15,315.61

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Solution

The fourth proportional to 25,387.38, 35,035.79 and 15,315.61 is: 21,136.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,387.38 : 35,035.79 = 15,315.61 : x
  2. Step 2: Convert to fraction form
    25,387.38/35,035.79 = 15,315.61/x
  3. Step 3: Cross multiply
    25,387.38x = 35,035.79 × 15,315.61
  4. Step 4: Simplify right side
    25,387.38x = 536,594,432.02
  5. Step 5: Solve for x
    x = 536,594,432.02/25,387.38
  6. Step 6: Final answer
    x = 21,136.26

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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.