Home / 13,418.82-18,518.10-7,368.66

Finding the Fourth Proportional to 13,418.82, 18,518.10 and 7,368.66

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Solution

The fourth proportional to 13,418.82, 18,518.10 and 7,368.66 is: 10,168.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,418.82 : 18,518.10 = 7,368.66 : x
  2. Step 2: Convert to fraction form
    13,418.82/18,518.10 = 7,368.66/x
  3. Step 3: Cross multiply
    13,418.82x = 18,518.10 × 7,368.66
  4. Step 4: Simplify right side
    13,418.82x = 136,453,582.75
  5. Step 5: Solve for x
    x = 136,453,582.75/13,418.82
  6. Step 6: Final answer
    x = 10,168.82

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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.