Home / 15,882.18-21,915.06-8,808.66

Finding the Fourth Proportional to 15,882.18, 21,915.06 and 8,808.66

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Solution

The fourth proportional to 15,882.18, 21,915.06 and 8,808.66 is: 12,154.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,882.18 : 21,915.06 = 8,808.66 : x
  2. Step 2: Convert to fraction form
    15,882.18/21,915.06 = 8,808.66/x
  3. Step 3: Cross multiply
    15,882.18x = 21,915.06 × 8,808.66
  4. Step 4: Simplify right side
    15,882.18x = 193,042,312.42
  5. Step 5: Solve for x
    x = 193,042,312.42/15,882.18
  6. Step 6: Final answer
    x = 12,154.65

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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.