Home / 20,751.67-28,637.25-11,320.24

Finding the Fourth Proportional to 20,751.67, 28,637.25 and 11,320.24

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Solution

The fourth proportional to 20,751.67, 28,637.25 and 11,320.24 is: 15,621.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,751.67 : 28,637.25 = 11,320.24 : x
  2. Step 2: Convert to fraction form
    20,751.67/28,637.25 = 11,320.24/x
  3. Step 3: Cross multiply
    20,751.67x = 28,637.25 × 11,320.24
  4. Step 4: Simplify right side
    20,751.67x = 324,180,542.94
  5. Step 5: Solve for x
    x = 324,180,542.94/20,751.67
  6. Step 6: Final answer
    x = 15,621.90

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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.