Home / 20,685.17-31,034.78-9,006.05

Finding the Fourth Proportional to 20,685.17, 31,034.78 and 9,006.05

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Solution

The fourth proportional to 20,685.17, 31,034.78 and 9,006.05 is: 13,512.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,685.17 : 31,034.78 = 9,006.05 : x
  2. Step 2: Convert to fraction form
    20,685.17/31,034.78 = 9,006.05/x
  3. Step 3: Cross multiply
    20,685.17x = 31,034.78 × 9,006.05
  4. Step 4: Simplify right side
    20,685.17x = 279,500,735.39
  5. Step 5: Solve for x
    x = 279,500,735.39/20,685.17
  6. Step 6: Final answer
    x = 13,512.13

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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.