Home / 20,301.20-28,015.85-11,349.19

Finding the Fourth Proportional to 20,301.20, 28,015.85 and 11,349.19

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Solution

The fourth proportional to 20,301.20, 28,015.85 and 11,349.19 is: 15,661.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,301.20 : 28,015.85 = 11,349.19 : x
  2. Step 2: Convert to fraction form
    20,301.20/28,015.85 = 11,349.19/x
  3. Step 3: Cross multiply
    20,301.20x = 28,015.85 × 11,349.19
  4. Step 4: Simplify right side
    20,301.20x = 317,957,007.84
  5. Step 5: Solve for x
    x = 317,957,007.84/20,301.20
  6. Step 6: Final answer
    x = 15,661.98

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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.