Home / 18,868.66-28,302.08-5,541.10

Finding the Fourth Proportional to 18,868.66, 28,302.08 and 5,541.10

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Solution

The fourth proportional to 18,868.66, 28,302.08 and 5,541.10 is: 8,311.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,868.66 : 28,302.08 = 5,541.10 : x
  2. Step 2: Convert to fraction form
    18,868.66/28,302.08 = 5,541.10/x
  3. Step 3: Cross multiply
    18,868.66x = 28,302.08 × 5,541.10
  4. Step 4: Simplify right side
    18,868.66x = 156,824,557.03
  5. Step 5: Solve for x
    x = 156,824,557.03/18,868.66
  6. Step 6: Final answer
    x = 8,311.38

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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.