Home / 15,638.40-23,427.36-8,691.84

Finding the Fourth Proportional to 15,638.40, 23,427.36 and 8,691.84

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Solution

The fourth proportional to 15,638.40, 23,427.36 and 8,691.84 is: 13,020.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,638.40 : 23,427.36 = 8,691.84 : x
  2. Step 2: Convert to fraction form
    15,638.40/23,427.36 = 8,691.84/x
  3. Step 3: Cross multiply
    15,638.40x = 23,427.36 × 8,691.84
  4. Step 4: Simplify right side
    15,638.40x = 203,626,864.74
  5. Step 5: Solve for x
    x = 203,626,864.74/15,638.40
  6. Step 6: Final answer
    x = 13,020.95

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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.