Home / 18,867.20-28,302.60-5,718.20

Finding the Fourth Proportional to 18,867.20, 28,302.60 and 5,718.20

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Solution

The fourth proportional to 18,867.20, 28,302.60 and 5,718.20 is: 8,577.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,867.20 : 28,302.60 = 5,718.20 : x
  2. Step 2: Convert to fraction form
    18,867.20/28,302.60 = 5,718.20/x
  3. Step 3: Cross multiply
    18,867.20x = 28,302.60 × 5,718.20
  4. Step 4: Simplify right side
    18,867.20x = 161,839,927.32
  5. Step 5: Solve for x
    x = 161,839,927.32/18,867.20
  6. Step 6: Final answer
    x = 8,577.85

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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.