Home / 20,343.40-30,398.45-15,508.10

Finding the Fourth Proportional to 20,343.40, 30,398.45 and 15,508.10

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Solution

The fourth proportional to 20,343.40, 30,398.45 and 15,508.10 is: 23,173.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,343.40 : 30,398.45 = 15,508.10 : x
  2. Step 2: Convert to fraction form
    20,343.40/30,398.45 = 15,508.10/x
  3. Step 3: Cross multiply
    20,343.40x = 30,398.45 × 15,508.10
  4. Step 4: Simplify right side
    20,343.40x = 471,422,200.90
  5. Step 5: Solve for x
    x = 471,422,200.90/20,343.40
  6. Step 6: Final answer
    x = 23,173.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.