Home / 12,725.78-17,570.68-8,486.84

Finding the Fourth Proportional to 12,725.78, 17,570.68 and 8,486.84

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Solution

The fourth proportional to 12,725.78, 17,570.68 and 8,486.84 is: 11,717.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,725.78 : 17,570.68 = 8,486.84 : x
  2. Step 2: Convert to fraction form
    12,725.78/17,570.68 = 8,486.84/x
  3. Step 3: Cross multiply
    12,725.78x = 17,570.68 × 8,486.84
  4. Step 4: Simplify right side
    12,725.78x = 149,119,572.56
  5. Step 5: Solve for x
    x = 149,119,572.56/12,725.78
  6. Step 6: Final answer
    x = 11,717.92

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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.