Home / 20,300.72-28,006.76-13,224.56

Finding the Fourth Proportional to 20,300.72, 28,006.76 and 13,224.56

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Solution

The fourth proportional to 20,300.72, 28,006.76 and 13,224.56 is: 18,244.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,300.72 : 28,006.76 = 13,224.56 : x
  2. Step 2: Convert to fraction form
    20,300.72/28,006.76 = 13,224.56/x
  3. Step 3: Cross multiply
    20,300.72x = 28,006.76 × 13,224.56
  4. Step 4: Simplify right side
    20,300.72x = 370,377,078.03
  5. Step 5: Solve for x
    x = 370,377,078.03/20,300.72
  6. Step 6: Final answer
    x = 18,244.53

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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.