Home / 15,525.53-21,425.78-8,811.44

Finding the Fourth Proportional to 15,525.53, 21,425.78 and 8,811.44

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Solution

The fourth proportional to 15,525.53, 21,425.78 and 8,811.44 is: 12,160.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,525.53 : 21,425.78 = 8,811.44 : x
  2. Step 2: Convert to fraction form
    15,525.53/21,425.78 = 8,811.44/x
  3. Step 3: Cross multiply
    15,525.53x = 21,425.78 × 8,811.44
  4. Step 4: Simplify right side
    15,525.53x = 188,791,974.92
  5. Step 5: Solve for x
    x = 188,791,974.92/15,525.53
  6. Step 6: Final answer
    x = 12,160.10

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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.