Home / 20,319.05-28,041.67-11,367.39

Finding the Fourth Proportional to 20,319.05, 28,041.67 and 11,367.39

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Solution

The fourth proportional to 20,319.05, 28,041.67 and 11,367.39 is: 15,687.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,319.05 : 28,041.67 = 11,367.39 : x
  2. Step 2: Convert to fraction form
    20,319.05/28,041.67 = 11,367.39/x
  3. Step 3: Cross multiply
    20,319.05x = 28,041.67 × 11,367.39
  4. Step 4: Simplify right side
    20,319.05x = 318,760,528.80
  5. Step 5: Solve for x
    x = 318,760,528.80/20,319.05
  6. Step 6: Final answer
    x = 15,687.77

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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.