Home / 12,006.11-18,008.69-3,685.70

Finding the Fourth Proportional to 12,006.11, 18,008.69 and 3,685.70

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Solution

The fourth proportional to 12,006.11, 18,008.69 and 3,685.70 is: 5,528.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,006.11 : 18,008.69 = 3,685.70 : x
  2. Step 2: Convert to fraction form
    12,006.11/18,008.69 = 3,685.70/x
  3. Step 3: Cross multiply
    12,006.11x = 18,008.69 × 3,685.70
  4. Step 4: Simplify right side
    12,006.11x = 66,374,520.26
  5. Step 5: Solve for x
    x = 66,374,520.26/12,006.11
  6. Step 6: Final answer
    x = 5,528.40

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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.