Home / 12,718.08-17,542.08-12,289.92

Finding the Fourth Proportional to 12,718.08, 17,542.08 and 12,289.92

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Solution

The fourth proportional to 12,718.08, 17,542.08 and 12,289.92 is: 16,951.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,718.08 : 17,542.08 = 12,289.92 : x
  2. Step 2: Convert to fraction form
    12,718.08/17,542.08 = 12,289.92/x
  3. Step 3: Cross multiply
    12,718.08x = 17,542.08 × 12,289.92
  4. Step 4: Simplify right side
    12,718.08x = 215,590,759.83
  5. Step 5: Solve for x
    x = 215,590,759.83/12,718.08
  6. Step 6: Final answer
    x = 16,951.52

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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.