Home / 12,378.88-17,078.67-7,344.66

Finding the Fourth Proportional to 12,378.88, 17,078.67 and 7,344.66

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Solution

The fourth proportional to 12,378.88, 17,078.67 and 7,344.66 is: 10,133.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,378.88 : 17,078.67 = 7,344.66 : x
  2. Step 2: Convert to fraction form
    12,378.88/17,078.67 = 7,344.66/x
  3. Step 3: Cross multiply
    12,378.88x = 17,078.67 × 7,344.66
  4. Step 4: Simplify right side
    12,378.88x = 125,437,024.40
  5. Step 5: Solve for x
    x = 125,437,024.40/12,378.88
  6. Step 6: Final answer
    x = 10,133.15

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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.