Home / 12,531.38-17,284.98-8,060.78

Finding the Fourth Proportional to 12,531.38, 17,284.98 and 8,060.78

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Solution

The fourth proportional to 12,531.38, 17,284.98 and 8,060.78 is: 11,118.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,531.38 : 17,284.98 = 8,060.78 : x
  2. Step 2: Convert to fraction form
    12,531.38/17,284.98 = 8,060.78/x
  3. Step 3: Cross multiply
    12,531.38x = 17,284.98 × 8,060.78
  4. Step 4: Simplify right side
    12,531.38x = 139,330,421.08
  5. Step 5: Solve for x
    x = 139,330,421.08/12,531.38
  6. Step 6: Final answer
    x = 11,118.52

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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.