Home / 20,853.18-31,260.33-7,702.02

Finding the Fourth Proportional to 20,853.18, 31,260.33 and 7,702.02

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Solution

The fourth proportional to 20,853.18, 31,260.33 and 7,702.02 is: 11,545.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,853.18 : 31,260.33 = 7,702.02 : x
  2. Step 2: Convert to fraction form
    20,853.18/31,260.33 = 7,702.02/x
  3. Step 3: Cross multiply
    20,853.18x = 31,260.33 × 7,702.02
  4. Step 4: Simplify right side
    20,853.18x = 240,767,686.87
  5. Step 5: Solve for x
    x = 240,767,686.87/20,853.18
  6. Step 6: Final answer
    x = 11,545.85

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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.