Home / 13,604.58-18,778.10-7,940.52

Finding the Fourth Proportional to 13,604.58, 18,778.10 and 7,940.52

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Solution

The fourth proportional to 13,604.58, 18,778.10 and 7,940.52 is: 10,960.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,604.58 : 18,778.10 = 7,940.52 : x
  2. Step 2: Convert to fraction form
    13,604.58/18,778.10 = 7,940.52/x
  3. Step 3: Cross multiply
    13,604.58x = 18,778.10 × 7,940.52
  4. Step 4: Simplify right side
    13,604.58x = 149,107,838.91
  5. Step 5: Solve for x
    x = 149,107,838.91/13,604.58
  6. Step 6: Final answer
    x = 10,960.12

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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.