Home / 15,432.28-21,296.57-8,358.71

Finding the Fourth Proportional to 15,432.28, 21,296.57 and 8,358.71

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Solution

The fourth proportional to 15,432.28, 21,296.57 and 8,358.71 is: 11,535.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,432.28 : 21,296.57 = 8,358.71 : x
  2. Step 2: Convert to fraction form
    15,432.28/21,296.57 = 8,358.71/x
  3. Step 3: Cross multiply
    15,432.28x = 21,296.57 × 8,358.71
  4. Step 4: Simplify right side
    15,432.28x = 178,011,767.04
  5. Step 5: Solve for x
    x = 178,011,767.04/15,432.28
  6. Step 6: Final answer
    x = 11,535.03

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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.