Home / 20,481.32-28,255.08-16,720.02

Finding the Fourth Proportional to 20,481.32, 28,255.08 and 16,720.02

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Solution

The fourth proportional to 20,481.32, 28,255.08 and 16,720.02 is: 23,066.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,481.32 : 28,255.08 = 16,720.02 : x
  2. Step 2: Convert to fraction form
    20,481.32/28,255.08 = 16,720.02/x
  3. Step 3: Cross multiply
    20,481.32x = 28,255.08 × 16,720.02
  4. Step 4: Simplify right side
    20,481.32x = 472,425,502.70
  5. Step 5: Solve for x
    x = 472,425,502.70/20,481.32
  6. Step 6: Final answer
    x = 23,066.17

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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.