Home / 12,591.24-18,886.41-5,190.15

Finding the Fourth Proportional to 12,591.24, 18,886.41 and 5,190.15

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Solution

The fourth proportional to 12,591.24, 18,886.41 and 5,190.15 is: 7,785.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,591.24 : 18,886.41 = 5,190.15 : x
  2. Step 2: Convert to fraction form
    12,591.24/18,886.41 = 5,190.15/x
  3. Step 3: Cross multiply
    12,591.24x = 18,886.41 × 5,190.15
  4. Step 4: Simplify right side
    12,591.24x = 98,023,180.48
  5. Step 5: Solve for x
    x = 98,023,180.48/12,591.24
  6. Step 6: Final answer
    x = 7,785.03

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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.