Home / 20,751.91-28,637.58-11,320.41

Finding the Fourth Proportional to 20,751.91, 28,637.58 and 11,320.41

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Solution

The fourth proportional to 20,751.91, 28,637.58 and 11,320.41 is: 15,622.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,751.91 : 28,637.58 = 11,320.41 : x
  2. Step 2: Convert to fraction form
    20,751.91/28,637.58 = 11,320.41/x
  3. Step 3: Cross multiply
    20,751.91x = 28,637.58 × 11,320.41
  4. Step 4: Simplify right side
    20,751.91x = 324,188,947.22
  5. Step 5: Solve for x
    x = 324,188,947.22/20,751.91
  6. Step 6: Final answer
    x = 15,622.13

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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.