Home / 12,168.20-18,238.28-5,497.50

Finding the Fourth Proportional to 12,168.20, 18,238.28 and 5,497.50

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Solution

The fourth proportional to 12,168.20, 18,238.28 and 5,497.50 is: 8,239.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,168.20 : 18,238.28 = 5,497.50 : x
  2. Step 2: Convert to fraction form
    12,168.20/18,238.28 = 5,497.50/x
  3. Step 3: Cross multiply
    12,168.20x = 18,238.28 × 5,497.50
  4. Step 4: Simplify right side
    12,168.20x = 100,264,916.81
  5. Step 5: Solve for x
    x = 100,264,916.81/12,168.20
  6. Step 6: Final answer
    x = 8,239.92

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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.