Home / 13,347.17-18,418.66-7,378.82

Finding the Fourth Proportional to 13,347.17, 18,418.66 and 7,378.82

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Solution

The fourth proportional to 13,347.17, 18,418.66 and 7,378.82 is: 10,182.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,347.17 : 18,418.66 = 7,378.82 : x
  2. Step 2: Convert to fraction form
    13,347.17/18,418.66 = 7,378.82/x
  3. Step 3: Cross multiply
    13,347.17x = 18,418.66 × 7,378.82
  4. Step 4: Simplify right side
    13,347.17x = 135,907,976.78
  5. Step 5: Solve for x
    x = 135,907,976.78/13,347.17
  6. Step 6: Final answer
    x = 10,182.53

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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.