Home / 12,561.78-17,336.87-7,255.58

Finding the Fourth Proportional to 12,561.78, 17,336.87 and 7,255.58

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Solution

The fourth proportional to 12,561.78, 17,336.87 and 7,255.58 is: 10,013.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,561.78 : 17,336.87 = 7,255.58 : x
  2. Step 2: Convert to fraction form
    12,561.78/17,336.87 = 7,255.58/x
  3. Step 3: Cross multiply
    12,561.78x = 17,336.87 × 7,255.58
  4. Step 4: Simplify right side
    12,561.78x = 125,788,951.48
  5. Step 5: Solve for x
    x = 125,788,951.48/12,561.78
  6. Step 6: Final answer
    x = 10,013.62

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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.