Home / 20,711.24-31,066.71-12,393.56

Finding the Fourth Proportional to 20,711.24, 31,066.71 and 12,393.56

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Solution

The fourth proportional to 20,711.24, 31,066.71 and 12,393.56 is: 18,590.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,711.24 : 31,066.71 = 12,393.56 : x
  2. Step 2: Convert to fraction form
    20,711.24/31,066.71 = 12,393.56/x
  3. Step 3: Cross multiply
    20,711.24x = 31,066.71 × 12,393.56
  4. Step 4: Simplify right side
    20,711.24x = 385,027,134.39
  5. Step 5: Solve for x
    x = 385,027,134.39/20,711.24
  6. Step 6: Final answer
    x = 18,590.25

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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.