Home / 20,604.50-28,434.39-11,173.06

Finding the Fourth Proportional to 20,604.50, 28,434.39 and 11,173.06

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Solution

The fourth proportional to 20,604.50, 28,434.39 and 11,173.06 is: 15,418.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,604.50 : 28,434.39 = 11,173.06 : x
  2. Step 2: Convert to fraction form
    20,604.50/28,434.39 = 11,173.06/x
  3. Step 3: Cross multiply
    20,604.50x = 28,434.39 × 11,173.06
  4. Step 4: Simplify right side
    20,604.50x = 317,699,139.18
  5. Step 5: Solve for x
    x = 317,699,139.18/20,604.50
  6. Step 6: Final answer
    x = 15,418.92

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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.