Home / 15,143.28-22,712.88-5,281.68

Finding the Fourth Proportional to 15,143.28, 22,712.88 and 5,281.68

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Solution

The fourth proportional to 15,143.28, 22,712.88 and 5,281.68 is: 7,921.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,143.28 : 22,712.88 = 5,281.68 : x
  2. Step 2: Convert to fraction form
    15,143.28/22,712.88 = 5,281.68/x
  3. Step 3: Cross multiply
    15,143.28x = 22,712.88 × 5,281.68
  4. Step 4: Simplify right side
    15,143.28x = 119,962,164.04
  5. Step 5: Solve for x
    x = 119,962,164.04/15,143.28
  6. Step 6: Final answer
    x = 7,921.81

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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.