Home / 13,362.88-18,418.72-12,247.36

Finding the Fourth Proportional to 13,362.88, 18,418.72 and 12,247.36

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Solution

The fourth proportional to 13,362.88, 18,418.72 and 12,247.36 is: 16,881.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,362.88 : 18,418.72 = 12,247.36 : x
  2. Step 2: Convert to fraction form
    13,362.88/18,418.72 = 12,247.36/x
  3. Step 3: Cross multiply
    13,362.88x = 18,418.72 × 12,247.36
  4. Step 4: Simplify right side
    13,362.88x = 225,580,694.58
  5. Step 5: Solve for x
    x = 225,580,694.58/13,362.88
  6. Step 6: Final answer
    x = 16,881.14

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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.