Home / 20,449.16-28,219.70-11,617.16

Finding the Fourth Proportional to 20,449.16, 28,219.70 and 11,617.16

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Solution

The fourth proportional to 20,449.16, 28,219.70 and 11,617.16 is: 16,031.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,449.16 : 28,219.70 = 11,617.16 : x
  2. Step 2: Convert to fraction form
    20,449.16/28,219.70 = 11,617.16/x
  3. Step 3: Cross multiply
    20,449.16x = 28,219.70 × 11,617.16
  4. Step 4: Simplify right side
    20,449.16x = 327,832,770.05
  5. Step 5: Solve for x
    x = 327,832,770.05/20,449.16
  6. Step 6: Final answer
    x = 16,031.60

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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.