Home / 20,967.50-28,935.42-11,535.86

Finding the Fourth Proportional to 20,967.50, 28,935.42 and 11,535.86

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Solution

The fourth proportional to 20,967.50, 28,935.42 and 11,535.86 is: 15,919.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,967.50 : 28,935.42 = 11,535.86 : x
  2. Step 2: Convert to fraction form
    20,967.50/28,935.42 = 11,535.86/x
  3. Step 3: Cross multiply
    20,967.50x = 28,935.42 × 11,535.86
  4. Step 4: Simplify right side
    20,967.50x = 333,794,954.16
  5. Step 5: Solve for x
    x = 333,794,954.16/20,967.50
  6. Step 6: Final answer
    x = 15,919.64

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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.