Home / 12,251.36-18,338.16-8,778.08

Finding the Fourth Proportional to 12,251.36, 18,338.16 and 8,778.08

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Solution

The fourth proportional to 12,251.36, 18,338.16 and 8,778.08 is: 13,139.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,251.36 : 18,338.16 = 8,778.08 : x
  2. Step 2: Convert to fraction form
    12,251.36/18,338.16 = 8,778.08/x
  3. Step 3: Cross multiply
    12,251.36x = 18,338.16 × 8,778.08
  4. Step 4: Simplify right side
    12,251.36x = 160,973,835.53
  5. Step 5: Solve for x
    x = 160,973,835.53/12,251.36
  6. Step 6: Final answer
    x = 13,139.26

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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.