Home / 12,117.36-16,717.68-7,928.04

Finding the Fourth Proportional to 12,117.36, 16,717.68 and 7,928.04

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Solution

The fourth proportional to 12,117.36, 16,717.68 and 7,928.04 is: 10,937.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,117.36 : 16,717.68 = 7,928.04 : x
  2. Step 2: Convert to fraction form
    12,117.36/16,717.68 = 7,928.04/x
  3. Step 3: Cross multiply
    12,117.36x = 16,717.68 × 7,928.04
  4. Step 4: Simplify right side
    12,117.36x = 132,538,435.75
  5. Step 5: Solve for x
    x = 132,538,435.75/12,117.36
  6. Step 6: Final answer
    x = 10,937.90

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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.