Home / 12,247.38-18,368.28-3,480.12

Finding the Fourth Proportional to 12,247.38, 18,368.28 and 3,480.12

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Solution

The fourth proportional to 12,247.38, 18,368.28 and 3,480.12 is: 5,219.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,247.38 : 18,368.28 = 3,480.12 : x
  2. Step 2: Convert to fraction form
    12,247.38/18,368.28 = 3,480.12/x
  3. Step 3: Cross multiply
    12,247.38x = 18,368.28 × 3,480.12
  4. Step 4: Simplify right side
    12,247.38x = 63,923,818.59
  5. Step 5: Solve for x
    x = 63,923,818.59/12,247.38
  6. Step 6: Final answer
    x = 5,219.39

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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.