Home / 12,531.31-17,282.45-8,939.41

Finding the Fourth Proportional to 12,531.31, 17,282.45 and 8,939.41

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Solution

The fourth proportional to 12,531.31, 17,282.45 and 8,939.41 is: 12,328.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,531.31 : 17,282.45 = 8,939.41 : x
  2. Step 2: Convert to fraction form
    12,531.31/17,282.45 = 8,939.41/x
  3. Step 3: Cross multiply
    12,531.31x = 17,282.45 × 8,939.41
  4. Step 4: Simplify right side
    12,531.31x = 154,494,885.50
  5. Step 5: Solve for x
    x = 154,494,885.50/12,531.31
  6. Step 6: Final answer
    x = 12,328.71

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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.