Home / 12,561.63-17,331.50-8,087.97

Finding the Fourth Proportional to 12,561.63, 17,331.50 and 8,087.97

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Solution

The fourth proportional to 12,561.63, 17,331.50 and 8,087.97 is: 11,159.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,561.63 : 17,331.50 = 8,087.97 : x
  2. Step 2: Convert to fraction form
    12,561.63/17,331.50 = 8,087.97/x
  3. Step 3: Cross multiply
    12,561.63x = 17,331.50 × 8,087.97
  4. Step 4: Simplify right side
    12,561.63x = 140,176,611.62
  5. Step 5: Solve for x
    x = 140,176,611.62/12,561.63
  6. Step 6: Final answer
    x = 11,159.11

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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.