Home / 18,753.45-28,131.86-5,426.24

Finding the Fourth Proportional to 18,753.45, 28,131.86 and 5,426.24

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Solution

The fourth proportional to 18,753.45, 28,131.86 and 5,426.24 is: 8,139.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,753.45 : 28,131.86 = 5,426.24 : x
  2. Step 2: Convert to fraction form
    18,753.45/28,131.86 = 5,426.24/x
  3. Step 3: Cross multiply
    18,753.45x = 28,131.86 × 5,426.24
  4. Step 4: Simplify right side
    18,753.45x = 152,650,224.01
  5. Step 5: Solve for x
    x = 152,650,224.01/18,753.45
  6. Step 6: Final answer
    x = 8,139.85

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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.