Home / 20,783.92-31,316.15-17,167.18

Finding the Fourth Proportional to 20,783.92, 31,316.15 and 17,167.18

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Solution

The fourth proportional to 20,783.92, 31,316.15 and 17,167.18 is: 25,866.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,783.92 : 31,316.15 = 17,167.18 : x
  2. Step 2: Convert to fraction form
    20,783.92/31,316.15 = 17,167.18/x
  3. Step 3: Cross multiply
    20,783.92x = 31,316.15 × 17,167.18
  4. Step 4: Simplify right side
    20,783.92x = 537,609,983.96
  5. Step 5: Solve for x
    x = 537,609,983.96/20,783.92
  6. Step 6: Final answer
    x = 25,866.63

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.