Home / 20,209.50-27,888.01-11,134.57

Finding the Fourth Proportional to 20,209.50, 27,888.01 and 11,134.57

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Solution

The fourth proportional to 20,209.50, 27,888.01 and 11,134.57 is: 15,365.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,209.50 : 27,888.01 = 11,134.57 : x
  2. Step 2: Convert to fraction form
    20,209.50/27,888.01 = 11,134.57/x
  3. Step 3: Cross multiply
    20,209.50x = 27,888.01 × 11,134.57
  4. Step 4: Simplify right side
    20,209.50x = 310,520,901.95
  5. Step 5: Solve for x
    x = 310,520,901.95/20,209.50
  6. Step 6: Final answer
    x = 15,365.09

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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.