Home / 10,281.38-15,422.01-2,490.20

Finding the Fourth Proportional to 10,281.38, 15,422.01 and 2,490.20

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Solution

The fourth proportional to 10,281.38, 15,422.01 and 2,490.20 is: 3,735.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,281.38 : 15,422.01 = 2,490.20 : x
  2. Step 2: Convert to fraction form
    10,281.38/15,422.01 = 2,490.20/x
  3. Step 3: Cross multiply
    10,281.38x = 15,422.01 × 2,490.20
  4. Step 4: Simplify right side
    10,281.38x = 38,403,812.19
  5. Step 5: Solve for x
    x = 38,403,812.19/10,281.38
  6. Step 6: Final answer
    x = 3,735.28

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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.