Home / 11,138.23-15,330.09-8,892.91

Finding the Fourth Proportional to 11,138.23, 15,330.09 and 8,892.91

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Solution

The fourth proportional to 11,138.23, 15,330.09 and 8,892.91 is: 12,239.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,138.23 : 15,330.09 = 8,892.91 : x
  2. Step 2: Convert to fraction form
    11,138.23/15,330.09 = 8,892.91/x
  3. Step 3: Cross multiply
    11,138.23x = 15,330.09 × 8,892.91
  4. Step 4: Simplify right side
    11,138.23x = 136,329,110.66
  5. Step 5: Solve for x
    x = 136,329,110.66/11,138.23
  6. Step 6: Final answer
    x = 12,239.75

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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.