Home / 11,119.10-15,373.88-9,717.84

Finding the Fourth Proportional to 11,119.10, 15,373.88 and 9,717.84

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Solution

The fourth proportional to 11,119.10, 15,373.88 and 9,717.84 is: 13,436.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,119.10 : 15,373.88 = 9,717.84 : x
  2. Step 2: Convert to fraction form
    11,119.10/15,373.88 = 9,717.84/x
  3. Step 3: Cross multiply
    11,119.10x = 15,373.88 × 9,717.84
  4. Step 4: Simplify right side
    11,119.10x = 149,400,951.52
  5. Step 5: Solve for x
    x = 149,400,951.52/11,119.10
  6. Step 6: Final answer
    x = 13,436.42

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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.