Home / 20,428.39-30,649.19-10,032.85

Finding the Fourth Proportional to 20,428.39, 30,649.19 and 10,032.85

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Solution

The fourth proportional to 20,428.39, 30,649.19 and 10,032.85 is: 15,052.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,428.39 : 30,649.19 = 10,032.85 : x
  2. Step 2: Convert to fraction form
    20,428.39/30,649.19 = 10,032.85/x
  3. Step 3: Cross multiply
    20,428.39x = 30,649.19 × 10,032.85
  4. Step 4: Simplify right side
    20,428.39x = 307,498,725.89
  5. Step 5: Solve for x
    x = 307,498,725.89/20,428.39
  6. Step 6: Final answer
    x = 15,052.52

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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.