Home / 12,108.78-18,170.16-5,088.24

Finding the Fourth Proportional to 12,108.78, 18,170.16 and 5,088.24

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Solution

The fourth proportional to 12,108.78, 18,170.16 and 5,088.24 is: 7,635.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,108.78 : 18,170.16 = 5,088.24 : x
  2. Step 2: Convert to fraction form
    12,108.78/18,170.16 = 5,088.24/x
  3. Step 3: Cross multiply
    12,108.78x = 18,170.16 × 5,088.24
  4. Step 4: Simplify right side
    12,108.78x = 92,454,134.92
  5. Step 5: Solve for x
    x = 92,454,134.92/12,108.78
  6. Step 6: Final answer
    x = 7,635.30

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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.