Home / 15,461.17-21,336.55-8,387.73

Finding the Fourth Proportional to 15,461.17, 21,336.55 and 8,387.73

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Solution

The fourth proportional to 15,461.17, 21,336.55 and 8,387.73 is: 11,575.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,461.17 : 21,336.55 = 8,387.73 : x
  2. Step 2: Convert to fraction form
    15,461.17/21,336.55 = 8,387.73/x
  3. Step 3: Cross multiply
    15,461.17x = 21,336.55 × 8,387.73
  4. Step 4: Simplify right side
    15,461.17x = 178,965,199.56
  5. Step 5: Solve for x
    x = 178,965,199.56/15,461.17
  6. Step 6: Final answer
    x = 11,575.14

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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.