Home / 20,854.14-31,293.27-7,715.58

Finding the Fourth Proportional to 20,854.14, 31,293.27 and 7,715.58

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Solution

The fourth proportional to 20,854.14, 31,293.27 and 7,715.58 is: 11,577.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,854.14 : 31,293.27 = 7,715.58 : x
  2. Step 2: Convert to fraction form
    20,854.14/31,293.27 = 7,715.58/x
  3. Step 3: Cross multiply
    20,854.14x = 31,293.27 × 7,715.58
  4. Step 4: Simplify right side
    20,854.14x = 241,445,728.15
  5. Step 5: Solve for x
    x = 241,445,728.15/20,854.14
  6. Step 6: Final answer
    x = 11,577.83

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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.