Home / 20,148.44-27,817.70-12,981.56

Finding the Fourth Proportional to 20,148.44, 27,817.70 and 12,981.56

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Solution

The fourth proportional to 20,148.44, 27,817.70 and 12,981.56 is: 17,922.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,148.44 : 27,817.70 = 12,981.56 : x
  2. Step 2: Convert to fraction form
    20,148.44/27,817.70 = 12,981.56/x
  3. Step 3: Cross multiply
    20,148.44x = 27,817.70 × 12,981.56
  4. Step 4: Simplify right side
    20,148.44x = 361,116,937.62
  5. Step 5: Solve for x
    x = 361,116,937.62/20,148.44
  6. Step 6: Final answer
    x = 17,922.83

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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.