Home / 15,411.20-23,100.96-6,638.72

Finding the Fourth Proportional to 15,411.20, 23,100.96 and 6,638.72

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Solution

The fourth proportional to 15,411.20, 23,100.96 and 6,638.72 is: 9,951.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,411.20 : 23,100.96 = 6,638.72 : x
  2. Step 2: Convert to fraction form
    15,411.20/23,100.96 = 6,638.72/x
  3. Step 3: Cross multiply
    15,411.20x = 23,100.96 × 6,638.72
  4. Step 4: Simplify right side
    15,411.20x = 153,360,805.17
  5. Step 5: Solve for x
    x = 153,360,805.17/15,411.20
  6. Step 6: Final answer
    x = 9,951.26

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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.