Home / 20,769.16-31,158.68-6,729.18

Finding the Fourth Proportional to 20,769.16, 31,158.68 and 6,729.18

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Solution

The fourth proportional to 20,769.16, 31,158.68 and 6,729.18 is: 10,095.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,769.16 : 31,158.68 = 6,729.18 : x
  2. Step 2: Convert to fraction form
    20,769.16/31,158.68 = 6,729.18/x
  3. Step 3: Cross multiply
    20,769.16x = 31,158.68 × 6,729.18
  4. Step 4: Simplify right side
    20,769.16x = 209,672,366.28
  5. Step 5: Solve for x
    x = 209,672,366.28/20,769.16
  6. Step 6: Final answer
    x = 10,095.37

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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.