Home / 20,972.68-28,943.68-11,541.86

Finding the Fourth Proportional to 20,972.68, 28,943.68 and 11,541.86

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Solution

The fourth proportional to 20,972.68, 28,943.68 and 11,541.86 is: 15,928.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,972.68 : 28,943.68 = 11,541.86 : x
  2. Step 2: Convert to fraction form
    20,972.68/28,943.68 = 11,541.86/x
  3. Step 3: Cross multiply
    20,972.68x = 28,943.68 × 11,541.86
  4. Step 4: Simplify right side
    20,972.68x = 334,063,902.44
  5. Step 5: Solve for x
    x = 334,063,902.44/20,972.68
  6. Step 6: Final answer
    x = 15,928.53

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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.