Home / 12,521.11-17,279.10-7,485.09

Finding the Fourth Proportional to 12,521.11, 17,279.10 and 7,485.09

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Solution

The fourth proportional to 12,521.11, 17,279.10 and 7,485.09 is: 10,329.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,521.11 : 17,279.10 = 7,485.09 : x
  2. Step 2: Convert to fraction form
    12,521.11/17,279.10 = 7,485.09/x
  3. Step 3: Cross multiply
    12,521.11x = 17,279.10 × 7,485.09
  4. Step 4: Simplify right side
    12,521.11x = 129,335,618.62
  5. Step 5: Solve for x
    x = 129,335,618.62/12,521.11
  6. Step 6: Final answer
    x = 10,329.41

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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.