Home / 12,009.10-18,016.28-3,689.74

Finding the Fourth Proportional to 12,009.10, 18,016.28 and 3,689.74

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Solution

The fourth proportional to 12,009.10, 18,016.28 and 3,689.74 is: 5,535.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,009.10 : 18,016.28 = 3,689.74 : x
  2. Step 2: Convert to fraction form
    12,009.10/18,016.28 = 3,689.74/x
  3. Step 3: Cross multiply
    12,009.10x = 18,016.28 × 3,689.74
  4. Step 4: Simplify right side
    12,009.10x = 66,475,406.88
  5. Step 5: Solve for x
    x = 66,475,406.88/12,009.10
  6. Step 6: Final answer
    x = 5,535.42

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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.