Home / 11,611.28-16,026.12-7,138.82

Finding the Fourth Proportional to 11,611.28, 16,026.12 and 7,138.82

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Solution

The fourth proportional to 11,611.28, 16,026.12 and 7,138.82 is: 9,853.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,611.28 : 16,026.12 = 7,138.82 : x
  2. Step 2: Convert to fraction form
    11,611.28/16,026.12 = 7,138.82/x
  3. Step 3: Cross multiply
    11,611.28x = 16,026.12 × 7,138.82
  4. Step 4: Simplify right side
    11,611.28x = 114,407,585.98
  5. Step 5: Solve for x
    x = 114,407,585.98/11,611.28
  6. Step 6: Final answer
    x = 9,853.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.