Home / 20,302.18-28,016.88-11,349.64

Finding the Fourth Proportional to 20,302.18, 28,016.88 and 11,349.64

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Solution

The fourth proportional to 20,302.18, 28,016.88 and 11,349.64 is: 15,662.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,302.18 : 28,016.88 = 11,349.64 : x
  2. Step 2: Convert to fraction form
    20,302.18/28,016.88 = 11,349.64/x
  3. Step 3: Cross multiply
    20,302.18x = 28,016.88 × 11,349.64
  4. Step 4: Simplify right side
    20,302.18x = 317,981,501.92
  5. Step 5: Solve for x
    x = 317,981,501.92/20,302.18
  6. Step 6: Final answer
    x = 15,662.43

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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.