Home / 15,423.29-21,282.56-8,961.92

Finding the Fourth Proportional to 15,423.29, 21,282.56 and 8,961.92

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Solution

The fourth proportional to 15,423.29, 21,282.56 and 8,961.92 is: 12,366.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,423.29 : 21,282.56 = 8,961.92 : x
  2. Step 2: Convert to fraction form
    15,423.29/21,282.56 = 8,961.92/x
  3. Step 3: Cross multiply
    15,423.29x = 21,282.56 × 8,961.92
  4. Step 4: Simplify right side
    15,423.29x = 190,732,672.58
  5. Step 5: Solve for x
    x = 190,732,672.58/15,423.29
  6. Step 6: Final answer
    x = 12,366.53

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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.