Home / 10,429.38-15,644.14-2,638.20

Finding the Fourth Proportional to 10,429.38, 15,644.14 and 2,638.20

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Solution

The fourth proportional to 10,429.38, 15,644.14 and 2,638.20 is: 3,957.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,429.38 : 15,644.14 = 2,638.20 : x
  2. Step 2: Convert to fraction form
    10,429.38/15,644.14 = 2,638.20/x
  3. Step 3: Cross multiply
    10,429.38x = 15,644.14 × 2,638.20
  4. Step 4: Simplify right side
    10,429.38x = 41,272,370.15
  5. Step 5: Solve for x
    x = 41,272,370.15/10,429.38
  6. Step 6: Final answer
    x = 3,957.32

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1.5x scale

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.