Home / 20,998.28-31,497.86-6,207.20

Finding the Fourth Proportional to 20,998.28, 31,497.86 and 6,207.20

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Solution

The fourth proportional to 20,998.28, 31,497.86 and 6,207.20 is: 9,310.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,998.28 : 31,497.86 = 6,207.20 : x
  2. Step 2: Convert to fraction form
    20,998.28/31,497.86 = 6,207.20/x
  3. Step 3: Cross multiply
    20,998.28x = 31,497.86 × 6,207.20
  4. Step 4: Simplify right side
    20,998.28x = 195,513,516.59
  5. Step 5: Solve for x
    x = 195,513,516.59/20,998.28
  6. Step 6: Final answer
    x = 9,310.93

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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.