Home / 12,106.32-18,157.20-3,785.28

Finding the Fourth Proportional to 12,106.32, 18,157.20 and 3,785.28

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Solution

The fourth proportional to 12,106.32, 18,157.20 and 3,785.28 is: 5,677.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,106.32 : 18,157.20 = 3,785.28 : x
  2. Step 2: Convert to fraction form
    12,106.32/18,157.20 = 3,785.28/x
  3. Step 3: Cross multiply
    12,106.32x = 18,157.20 × 3,785.28
  4. Step 4: Simplify right side
    12,106.32x = 68,730,086.02
  5. Step 5: Solve for x
    x = 68,730,086.02/12,106.32
  6. Step 6: Final answer
    x = 5,677.21

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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.