Home / 15,423.28-21,284.18-8,349.73

Finding the Fourth Proportional to 15,423.28, 21,284.18 and 8,349.73

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Solution

The fourth proportional to 15,423.28, 21,284.18 and 8,349.73 is: 11,522.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,423.28 : 21,284.18 = 8,349.73 : x
  2. Step 2: Convert to fraction form
    15,423.28/21,284.18 = 8,349.73/x
  3. Step 3: Cross multiply
    15,423.28x = 21,284.18 × 8,349.73
  4. Step 4: Simplify right side
    15,423.28x = 177,717,114.52
  5. Step 5: Solve for x
    x = 177,717,114.52/15,423.28
  6. Step 6: Final answer
    x = 11,522.65

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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.