Home / 13,418.08-18,517.11-7,368.59

Finding the Fourth Proportional to 13,418.08, 18,517.11 and 7,368.59

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Solution

The fourth proportional to 13,418.08, 18,517.11 and 7,368.59 is: 10,168.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,418.08 : 18,517.11 = 7,368.59 : x
  2. Step 2: Convert to fraction form
    13,418.08/18,517.11 = 7,368.59/x
  3. Step 3: Cross multiply
    13,418.08x = 18,517.11 × 7,368.59
  4. Step 4: Simplify right side
    13,418.08x = 136,445,010.24
  5. Step 5: Solve for x
    x = 136,445,010.24/13,418.08
  6. Step 6: Final answer
    x = 10,168.75

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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.