Home / 18,915.17-28,377.30-5,766.72

Finding the Fourth Proportional to 18,915.17, 28,377.30 and 5,766.72

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Solution

The fourth proportional to 18,915.17, 28,377.30 and 5,766.72 is: 8,651.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,915.17 : 28,377.30 = 5,766.72 : x
  2. Step 2: Convert to fraction form
    18,915.17/28,377.30 = 5,766.72/x
  3. Step 3: Cross multiply
    18,915.17x = 28,377.30 × 5,766.72
  4. Step 4: Simplify right side
    18,915.17x = 163,643,943.46
  5. Step 5: Solve for x
    x = 163,643,943.46/18,915.17
  6. Step 6: Final answer
    x = 8,651.47

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.