Home / 20,972.88-31,452.58-6,930.28

Finding the Fourth Proportional to 20,972.88, 31,452.58 and 6,930.28

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Solution

The fourth proportional to 20,972.88, 31,452.58 and 6,930.28 is: 10,393.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,972.88 : 31,452.58 = 6,930.28 : x
  2. Step 2: Convert to fraction form
    20,972.88/31,452.58 = 6,930.28/x
  3. Step 3: Cross multiply
    20,972.88x = 31,452.58 × 6,930.28
  4. Step 4: Simplify right side
    20,972.88x = 217,975,186.12
  5. Step 5: Solve for x
    x = 217,975,186.12/20,972.88
  6. Step 6: Final answer
    x = 10,393.19

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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.