Home / 20,351.14-30,531.94-7,867.91

Finding the Fourth Proportional to 20,351.14, 30,531.94 and 7,867.91

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Solution

The fourth proportional to 20,351.14, 30,531.94 and 7,867.91 is: 11,803.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,351.14 : 30,531.94 = 7,867.91 : x
  2. Step 2: Convert to fraction form
    20,351.14/30,531.94 = 7,867.91/x
  3. Step 3: Cross multiply
    20,351.14x = 30,531.94 × 7,867.91
  4. Step 4: Simplify right side
    20,351.14x = 240,222,612.71
  5. Step 5: Solve for x
    x = 240,222,612.71/20,351.14
  6. Step 6: Final answer
    x = 11,803.89

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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.