Home / 20,718.10-31,077.15-14,497.30

Finding the Fourth Proportional to 20,718.10, 31,077.15 and 14,497.30

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Solution

The fourth proportional to 20,718.10, 31,077.15 and 14,497.30 is: 21,745.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,718.10 : 31,077.15 = 14,497.30 : x
  2. Step 2: Convert to fraction form
    20,718.10/31,077.15 = 14,497.30/x
  3. Step 3: Cross multiply
    20,718.10x = 31,077.15 × 14,497.30
  4. Step 4: Simplify right side
    20,718.10x = 450,534,766.70
  5. Step 5: Solve for x
    x = 450,534,766.70/20,718.10
  6. Step 6: Final answer
    x = 21,745.95

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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.