Home / 13,680.52-18,880.26-7,713.43

Finding the Fourth Proportional to 13,680.52, 18,880.26 and 7,713.43

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Solution

The fourth proportional to 13,680.52, 18,880.26 and 7,713.43 is: 10,645.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,680.52 : 18,880.26 = 7,713.43 : x
  2. Step 2: Convert to fraction form
    13,680.52/18,880.26 = 7,713.43/x
  3. Step 3: Cross multiply
    13,680.52x = 18,880.26 × 7,713.43
  4. Step 4: Simplify right side
    13,680.52x = 145,631,552.85
  5. Step 5: Solve for x
    x = 145,631,552.85/13,680.52
  6. Step 6: Final answer
    x = 10,645.18

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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.