Home / 13,278.58-18,324.76-7,309.69

Finding the Fourth Proportional to 13,278.58, 18,324.76 and 7,309.69

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Solution

The fourth proportional to 13,278.58, 18,324.76 and 7,309.69 is: 10,087.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,278.58 : 18,324.76 = 7,309.69 : x
  2. Step 2: Convert to fraction form
    13,278.58/18,324.76 = 7,309.69/x
  3. Step 3: Cross multiply
    13,278.58x = 18,324.76 × 7,309.69
  4. Step 4: Simplify right side
    13,278.58x = 133,948,314.92
  5. Step 5: Solve for x
    x = 133,948,314.92/13,278.58
  6. Step 6: Final answer
    x = 10,087.55

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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.