Home / 20,703.60-31,087.80-15,195.60

Finding the Fourth Proportional to 20,703.60, 31,087.80 and 15,195.60

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Solution

The fourth proportional to 20,703.60, 31,087.80 and 15,195.60 is: 22,817.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,703.60 : 31,087.80 = 15,195.60 : x
  2. Step 2: Convert to fraction form
    20,703.60/31,087.80 = 15,195.60/x
  3. Step 3: Cross multiply
    20,703.60x = 31,087.80 × 15,195.60
  4. Step 4: Simplify right side
    20,703.60x = 472,397,773.68
  5. Step 5: Solve for x
    x = 472,397,773.68/20,703.60
  6. Step 6: Final answer
    x = 22,817.18

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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.