Home / 12,971.41-17,900.57-7,668.85

Finding the Fourth Proportional to 12,971.41, 17,900.57 and 7,668.85

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Solution

The fourth proportional to 12,971.41, 17,900.57 and 7,668.85 is: 10,583.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,971.41 : 17,900.57 = 7,668.85 : x
  2. Step 2: Convert to fraction form
    12,971.41/17,900.57 = 7,668.85/x
  3. Step 3: Cross multiply
    12,971.41x = 17,900.57 × 7,668.85
  4. Step 4: Simplify right side
    12,971.41x = 137,276,747.90
  5. Step 5: Solve for x
    x = 137,276,747.90/12,971.41
  6. Step 6: Final answer
    x = 10,583.02

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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.