Home / 18,828.77-28,242.42-5,680.79

Finding the Fourth Proportional to 18,828.77, 28,242.42 and 5,680.79

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Solution

The fourth proportional to 18,828.77, 28,242.42 and 5,680.79 is: 8,520.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,828.77 : 28,242.42 = 5,680.79 : x
  2. Step 2: Convert to fraction form
    18,828.77/28,242.42 = 5,680.79/x
  3. Step 3: Cross multiply
    18,828.77x = 28,242.42 × 5,680.79
  4. Step 4: Simplify right side
    18,828.77x = 160,439,115.90
  5. Step 5: Solve for x
    x = 160,439,115.90/18,828.77
  6. Step 6: Final answer
    x = 8,520.96

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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.