Home / 15,168.87-22,759.38-5,315.22

Finding the Fourth Proportional to 15,168.87, 22,759.38 and 5,315.22

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Solution

The fourth proportional to 15,168.87, 22,759.38 and 5,315.22 is: 7,974.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,168.87 : 22,759.38 = 5,315.22 : x
  2. Step 2: Convert to fraction form
    15,168.87/22,759.38 = 5,315.22/x
  3. Step 3: Cross multiply
    15,168.87x = 22,759.38 × 5,315.22
  4. Step 4: Simplify right side
    15,168.87x = 120,971,111.76
  5. Step 5: Solve for x
    x = 120,971,111.76/15,168.87
  6. Step 6: Final answer
    x = 7,974.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.