Home / 20,142.56-27,800.06-16,780.04

Finding the Fourth Proportional to 20,142.56, 27,800.06 and 16,780.04

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Solution

The fourth proportional to 20,142.56, 27,800.06 and 16,780.04 is: 23,159.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,142.56 : 27,800.06 = 16,780.04 : x
  2. Step 2: Convert to fraction form
    20,142.56/27,800.06 = 16,780.04/x
  3. Step 3: Cross multiply
    20,142.56x = 27,800.06 × 16,780.04
  4. Step 4: Simplify right side
    20,142.56x = 466,486,104.40
  5. Step 5: Solve for x
    x = 466,486,104.40/20,142.56
  6. Step 6: Final answer
    x = 23,159.23

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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.