Home / 12,080.15-18,123.20-9,761.18

Finding the Fourth Proportional to 12,080.15, 18,123.20 and 9,761.18

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Solution

The fourth proportional to 12,080.15, 18,123.20 and 9,761.18 is: 14,644.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,080.15 : 18,123.20 = 9,761.18 : x
  2. Step 2: Convert to fraction form
    12,080.15/18,123.20 = 9,761.18/x
  3. Step 3: Cross multiply
    12,080.15x = 18,123.20 × 9,761.18
  4. Step 4: Simplify right side
    12,080.15x = 176,903,677.95
  5. Step 5: Solve for x
    x = 176,903,677.95/12,080.15
  6. Step 6: Final answer
    x = 14,644.17

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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.