Home / 20,934.48-31,390.38-6,891.24

Finding the Fourth Proportional to 20,934.48, 31,390.38 and 6,891.24

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Solution

The fourth proportional to 20,934.48, 31,390.38 and 6,891.24 is: 10,333.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,934.48 : 31,390.38 = 6,891.24 : x
  2. Step 2: Convert to fraction form
    20,934.48/31,390.38 = 6,891.24/x
  3. Step 3: Cross multiply
    20,934.48x = 31,390.38 × 6,891.24
  4. Step 4: Simplify right side
    20,934.48x = 216,318,642.27
  5. Step 5: Solve for x
    x = 216,318,642.27/20,934.48
  6. Step 6: Final answer
    x = 10,333.13

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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.