Home / 12,009.13-18,013.70-3,801.13

Finding the Fourth Proportional to 12,009.13, 18,013.70 and 3,801.13

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Solution

The fourth proportional to 12,009.13, 18,013.70 and 3,801.13 is: 5,701.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,009.13 : 18,013.70 = 3,801.13 : x
  2. Step 2: Convert to fraction form
    12,009.13/18,013.70 = 3,801.13/x
  3. Step 3: Cross multiply
    12,009.13x = 18,013.70 × 3,801.13
  4. Step 4: Simplify right side
    12,009.13x = 68,472,415.48
  5. Step 5: Solve for x
    x = 68,472,415.48/12,009.13
  6. Step 6: Final answer
    x = 5,701.70

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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.