Home / 18,718.20-28,089.33-7,471.60

Finding the Fourth Proportional to 18,718.20, 28,089.33 and 7,471.60

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Solution

The fourth proportional to 18,718.20, 28,089.33 and 7,471.60 is: 11,212.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,718.20 : 28,089.33 = 7,471.60 : x
  2. Step 2: Convert to fraction form
    18,718.20/28,089.33 = 7,471.60/x
  3. Step 3: Cross multiply
    18,718.20x = 28,089.33 × 7,471.60
  4. Step 4: Simplify right side
    18,718.20x = 209,872,238.03
  5. Step 5: Solve for x
    x = 209,872,238.03/18,718.20
  6. Step 6: Final answer
    x = 11,212.20

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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.