Home / 10,867.20-16,300.80-10,659.84

Finding the Fourth Proportional to 10,867.20, 16,300.80 and 10,659.84

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Solution

The fourth proportional to 10,867.20, 16,300.80 and 10,659.84 is: 15,989.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,867.20 : 16,300.80 = 10,659.84 : x
  2. Step 2: Convert to fraction form
    10,867.20/16,300.80 = 10,659.84/x
  3. Step 3: Cross multiply
    10,867.20x = 16,300.80 × 10,659.84
  4. Step 4: Simplify right side
    10,867.20x = 173,763,919.87
  5. Step 5: Solve for x
    x = 173,763,919.87/10,867.20
  6. Step 6: Final answer
    x = 15,989.76

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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.