Home / 20,742.74-31,104.38-7,585.91

Finding the Fourth Proportional to 20,742.74, 31,104.38 and 7,585.91

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Solution

The fourth proportional to 20,742.74, 31,104.38 and 7,585.91 is: 11,375.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,742.74 : 31,104.38 = 7,585.91 : x
  2. Step 2: Convert to fraction form
    20,742.74/31,104.38 = 7,585.91/x
  3. Step 3: Cross multiply
    20,742.74x = 31,104.38 × 7,585.91
  4. Step 4: Simplify right side
    20,742.74x = 235,955,027.29
  5. Step 5: Solve for x
    x = 235,955,027.29/20,742.74
  6. Step 6: Final answer
    x = 11,375.31

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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.