Home / 15,920.43-23,874.39-5,387.55

Finding the Fourth Proportional to 15,920.43, 23,874.39 and 5,387.55

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Solution

The fourth proportional to 15,920.43, 23,874.39 and 5,387.55 is: 8,079.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,920.43 : 23,874.39 = 5,387.55 : x
  2. Step 2: Convert to fraction form
    15,920.43/23,874.39 = 5,387.55/x
  3. Step 3: Cross multiply
    15,920.43x = 23,874.39 × 5,387.55
  4. Step 4: Simplify right side
    15,920.43x = 128,624,469.84
  5. Step 5: Solve for x
    x = 128,624,469.84/15,920.43
  6. Step 6: Final answer
    x = 8,079.21

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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.