Home / 18,675.12-28,015.92-6,988.44

Finding the Fourth Proportional to 18,675.12, 28,015.92 and 6,988.44

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Solution

The fourth proportional to 18,675.12, 28,015.92 and 6,988.44 is: 10,483.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,675.12 : 28,015.92 = 6,988.44 : x
  2. Step 2: Convert to fraction form
    18,675.12/28,015.92 = 6,988.44/x
  3. Step 3: Cross multiply
    18,675.12x = 28,015.92 × 6,988.44
  4. Step 4: Simplify right side
    18,675.12x = 195,787,575.96
  5. Step 5: Solve for x
    x = 195,787,575.96/18,675.12
  6. Step 6: Final answer
    x = 10,483.87

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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.