Home / 12,467.40-18,701.10-9,186.90

Finding the Fourth Proportional to 12,467.40, 18,701.10 and 9,186.90

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Solution

The fourth proportional to 12,467.40, 18,701.10 and 9,186.90 is: 13,780.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,467.40 : 18,701.10 = 9,186.90 : x
  2. Step 2: Convert to fraction form
    12,467.40/18,701.10 = 9,186.90/x
  3. Step 3: Cross multiply
    12,467.40x = 18,701.10 × 9,186.90
  4. Step 4: Simplify right side
    12,467.40x = 171,805,135.59
  5. Step 5: Solve for x
    x = 171,805,135.59/12,467.40
  6. Step 6: Final answer
    x = 13,780.35

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.