Home / 20,343.68-28,073.14-11,391.04

Finding the Fourth Proportional to 20,343.68, 28,073.14 and 11,391.04

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Solution

The fourth proportional to 20,343.68, 28,073.14 and 11,391.04 is: 15,719.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,343.68 : 28,073.14 = 11,391.04 : x
  2. Step 2: Convert to fraction form
    20,343.68/28,073.14 = 11,391.04/x
  3. Step 3: Cross multiply
    20,343.68x = 28,073.14 × 11,391.04
  4. Step 4: Simplify right side
    20,343.68x = 319,782,260.67
  5. Step 5: Solve for x
    x = 319,782,260.67/20,343.68
  6. Step 6: Final answer
    x = 15,719.00

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.