Home / 15,016.12-20,722.12-8,643.96

Finding the Fourth Proportional to 15,016.12, 20,722.12 and 8,643.96

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Solution

The fourth proportional to 15,016.12, 20,722.12 and 8,643.96 is: 11,928.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,016.12 : 20,722.12 = 8,643.96 : x
  2. Step 2: Convert to fraction form
    15,016.12/20,722.12 = 8,643.96/x
  3. Step 3: Cross multiply
    15,016.12x = 20,722.12 × 8,643.96
  4. Step 4: Simplify right side
    15,016.12x = 179,121,176.40
  5. Step 5: Solve for x
    x = 179,121,176.40/15,016.12
  6. Step 6: Final answer
    x = 11,928.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.