Home / 20,702.24-31,068.40-15,522.08

Finding the Fourth Proportional to 20,702.24, 31,068.40 and 15,522.08

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Solution

The fourth proportional to 20,702.24, 31,068.40 and 15,522.08 is: 23,294.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,702.24 : 31,068.40 = 15,522.08 : x
  2. Step 2: Convert to fraction form
    20,702.24/31,068.40 = 15,522.08/x
  3. Step 3: Cross multiply
    20,702.24x = 31,068.40 × 15,522.08
  4. Step 4: Simplify right side
    20,702.24x = 482,246,190.27
  5. Step 5: Solve for x
    x = 482,246,190.27/20,702.24
  6. Step 6: Final answer
    x = 23,294.40

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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.