Home / 20,908.66-31,359.36-6,868.30

Finding the Fourth Proportional to 20,908.66, 31,359.36 and 6,868.30

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Solution

The fourth proportional to 20,908.66, 31,359.36 and 6,868.30 is: 10,301.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,908.66 : 31,359.36 = 6,868.30 : x
  2. Step 2: Convert to fraction form
    20,908.66/31,359.36 = 6,868.30/x
  3. Step 3: Cross multiply
    20,908.66x = 31,359.36 × 6,868.30
  4. Step 4: Simplify right side
    20,908.66x = 215,385,492.29
  5. Step 5: Solve for x
    x = 215,385,492.29/20,908.66
  6. Step 6: Final answer
    x = 10,301.26

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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.