Home / 18,701.32-28,057.68-11,213.20

Finding the Fourth Proportional to 18,701.32, 28,057.68 and 11,213.20

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Solution

The fourth proportional to 18,701.32, 28,057.68 and 11,213.20 is: 16,823.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,701.32 : 28,057.68 = 11,213.20 : x
  2. Step 2: Convert to fraction form
    18,701.32/28,057.68 = 11,213.20/x
  3. Step 3: Cross multiply
    18,701.32x = 28,057.68 × 11,213.20
  4. Step 4: Simplify right side
    18,701.32x = 314,616,377.38
  5. Step 5: Solve for x
    x = 314,616,377.38/18,701.32
  6. Step 6: Final answer
    x = 16,823.22

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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.