Home / 20,734.88-31,070.80-15,191.90

Finding the Fourth Proportional to 20,734.88, 31,070.80 and 15,191.90

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Solution

The fourth proportional to 20,734.88, 31,070.80 and 15,191.90 is: 22,764.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,734.88 : 31,070.80 = 15,191.90 : x
  2. Step 2: Convert to fraction form
    20,734.88/31,070.80 = 15,191.90/x
  3. Step 3: Cross multiply
    20,734.88x = 31,070.80 × 15,191.90
  4. Step 4: Simplify right side
    20,734.88x = 472,024,293.19
  5. Step 5: Solve for x
    x = 472,024,293.19/20,734.88
  6. Step 6: Final answer
    x = 22,764.75

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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.