Home / 20,911.12-31,366.68-7,060.12

Finding the Fourth Proportional to 20,911.12, 31,366.68 and 7,060.12

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Solution

The fourth proportional to 20,911.12, 31,366.68 and 7,060.12 is: 10,590.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,911.12 : 31,366.68 = 7,060.12 : x
  2. Step 2: Convert to fraction form
    20,911.12/31,366.68 = 7,060.12/x
  3. Step 3: Cross multiply
    20,911.12x = 31,366.68 × 7,060.12
  4. Step 4: Simplify right side
    20,911.12x = 221,452,524.80
  5. Step 5: Solve for x
    x = 221,452,524.80/20,911.12
  6. Step 6: Final answer
    x = 10,590.18

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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.