Home / 18,161.28-25,005.12-16,500.32

Finding the Fourth Proportional to 18,161.28, 25,005.12 and 16,500.32

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Solution

The fourth proportional to 18,161.28, 25,005.12 and 16,500.32 is: 22,718.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,161.28 : 25,005.12 = 16,500.32 : x
  2. Step 2: Convert to fraction form
    18,161.28/25,005.12 = 16,500.32/x
  3. Step 3: Cross multiply
    18,161.28x = 25,005.12 × 16,500.32
  4. Step 4: Simplify right side
    18,161.28x = 412,592,481.64
  5. Step 5: Solve for x
    x = 412,592,481.64/18,161.28
  6. Step 6: Final answer
    x = 22,718.25

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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.