Home / 21,077.55-31,622.13-6,286.95

Finding the Fourth Proportional to 21,077.55, 31,622.13 and 6,286.95

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Solution

The fourth proportional to 21,077.55, 31,622.13 and 6,286.95 is: 9,432.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,077.55 : 31,622.13 = 6,286.95 : x
  2. Step 2: Convert to fraction form
    21,077.55/31,622.13 = 6,286.95/x
  3. Step 3: Cross multiply
    21,077.55x = 31,622.13 × 6,286.95
  4. Step 4: Simplify right side
    21,077.55x = 198,806,750.20
  5. Step 5: Solve for x
    x = 198,806,750.20/21,077.55
  6. Step 6: Final answer
    x = 9,432.16

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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.