Home / 20,742.74-31,114.27-8,265.93

Finding the Fourth Proportional to 20,742.74, 31,114.27 and 8,265.93

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Solution

The fourth proportional to 20,742.74, 31,114.27 and 8,265.93 is: 12,398.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,742.74 : 31,114.27 = 8,265.93 : x
  2. Step 2: Convert to fraction form
    20,742.74/31,114.27 = 8,265.93/x
  3. Step 3: Cross multiply
    20,742.74x = 31,114.27 × 8,265.93
  4. Step 4: Simplify right side
    20,742.74x = 257,188,510.75
  5. Step 5: Solve for x
    x = 257,188,510.75/20,742.74
  6. Step 6: Final answer
    x = 12,398.97

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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.