Home / 21,193.38-31,799.04-10,657.86

Finding the Fourth Proportional to 21,193.38, 31,799.04 and 10,657.86

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Solution

The fourth proportional to 21,193.38, 31,799.04 and 10,657.86 is: 15,991.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,193.38 : 31,799.04 = 10,657.86 : x
  2. Step 2: Convert to fraction form
    21,193.38/31,799.04 = 10,657.86/x
  3. Step 3: Cross multiply
    21,193.38x = 31,799.04 × 10,657.86
  4. Step 4: Simplify right side
    21,193.38x = 338,909,716.45
  5. Step 5: Solve for x
    x = 338,909,716.45/21,193.38
  6. Step 6: Final answer
    x = 15,991.30

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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.