Home / 20,710.45-31,034.96-15,211.57

Finding the Fourth Proportional to 20,710.45, 31,034.96 and 15,211.57

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Solution

The fourth proportional to 20,710.45, 31,034.96 and 15,211.57 is: 22,794.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,710.45 : 31,034.96 = 15,211.57 : x
  2. Step 2: Convert to fraction form
    20,710.45/31,034.96 = 15,211.57/x
  3. Step 3: Cross multiply
    20,710.45x = 31,034.96 × 15,211.57
  4. Step 4: Simplify right side
    20,710.45x = 472,090,390.43
  5. Step 5: Solve for x
    x = 472,090,390.43/20,710.45
  6. Step 6: Final answer
    x = 22,794.79

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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.