Home / 12,316.20-18,480.48-5,742.90

Finding the Fourth Proportional to 12,316.20, 18,480.48 and 5,742.90

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Solution

The fourth proportional to 12,316.20, 18,480.48 and 5,742.90 is: 8,617.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,316.20 : 18,480.48 = 5,742.90 : x
  2. Step 2: Convert to fraction form
    12,316.20/18,480.48 = 5,742.90/x
  3. Step 3: Cross multiply
    12,316.20x = 18,480.48 × 5,742.90
  4. Step 4: Simplify right side
    12,316.20x = 106,131,548.59
  5. Step 5: Solve for x
    x = 106,131,548.59/12,316.20
  6. Step 6: Final answer
    x = 8,617.23

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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.