Home / 20,013.31-30,025.15-10,645.61

Finding the Fourth Proportional to 20,013.31, 30,025.15 and 10,645.61

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Solution

The fourth proportional to 20,013.31, 30,025.15 and 10,645.61 is: 15,971.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,013.31 : 30,025.15 = 10,645.61 : x
  2. Step 2: Convert to fraction form
    20,013.31/30,025.15 = 10,645.61/x
  3. Step 3: Cross multiply
    20,013.31x = 30,025.15 × 10,645.61
  4. Step 4: Simplify right side
    20,013.31x = 319,635,983.86
  5. Step 5: Solve for x
    x = 319,635,983.86/20,013.31
  6. Step 6: Final answer
    x = 15,971.17

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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.