Home / 12,515.32-18,754.08-8,340.58

Finding the Fourth Proportional to 12,515.32, 18,754.08 and 8,340.58

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Solution

The fourth proportional to 12,515.32, 18,754.08 and 8,340.58 is: 12,498.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,515.32 : 18,754.08 = 8,340.58 : x
  2. Step 2: Convert to fraction form
    12,515.32/18,754.08 = 8,340.58/x
  3. Step 3: Cross multiply
    12,515.32x = 18,754.08 × 8,340.58
  4. Step 4: Simplify right side
    12,515.32x = 156,419,904.57
  5. Step 5: Solve for x
    x = 156,419,904.57/12,515.32
  6. Step 6: Final answer
    x = 12,498.27

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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.