Home / 12,125.76-16,727.90-7,876.52

Finding the Fourth Proportional to 12,125.76, 16,727.90 and 7,876.52

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Solution

The fourth proportional to 12,125.76, 16,727.90 and 7,876.52 is: 10,865.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,125.76 : 16,727.90 = 7,876.52 : x
  2. Step 2: Convert to fraction form
    12,125.76/16,727.90 = 7,876.52/x
  3. Step 3: Cross multiply
    12,125.76x = 16,727.90 × 7,876.52
  4. Step 4: Simplify right side
    12,125.76x = 131,757,638.91
  5. Step 5: Solve for x
    x = 131,757,638.91/12,125.76
  6. Step 6: Final answer
    x = 10,865.93

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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.