Home / 13,403.10-18,480.15-11,168.22

Finding the Fourth Proportional to 13,403.10, 18,480.15 and 11,168.22

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Solution

The fourth proportional to 13,403.10, 18,480.15 and 11,168.22 is: 15,398.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,403.10 : 18,480.15 = 11,168.22 : x
  2. Step 2: Convert to fraction form
    13,403.10/18,480.15 = 11,168.22/x
  3. Step 3: Cross multiply
    13,403.10x = 18,480.15 × 11,168.22
  4. Step 4: Simplify right side
    13,403.10x = 206,390,380.83
  5. Step 5: Solve for x
    x = 206,390,380.83/13,403.10
  6. Step 6: Final answer
    x = 15,398.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.