Home / 20,397.92-28,145.72-12,016.08

Finding the Fourth Proportional to 20,397.92, 28,145.72 and 12,016.08

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Solution

The fourth proportional to 20,397.92, 28,145.72 and 12,016.08 is: 16,580.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,397.92 : 28,145.72 = 12,016.08 : x
  2. Step 2: Convert to fraction form
    20,397.92/28,145.72 = 12,016.08/x
  3. Step 3: Cross multiply
    20,397.92x = 28,145.72 × 12,016.08
  4. Step 4: Simplify right side
    20,397.92x = 338,201,223.18
  5. Step 5: Solve for x
    x = 338,201,223.18/20,397.92
  6. Step 6: Final answer
    x = 16,580.18

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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.