Home / 12,521.29-17,279.22-7,216.60

Finding the Fourth Proportional to 12,521.29, 17,279.22 and 7,216.60

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Solution

The fourth proportional to 12,521.29, 17,279.22 and 7,216.60 is: 9,958.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,521.29 : 17,279.22 = 7,216.60 : x
  2. Step 2: Convert to fraction form
    12,521.29/17,279.22 = 7,216.60/x
  3. Step 3: Cross multiply
    12,521.29x = 17,279.22 × 7,216.60
  4. Step 4: Simplify right side
    12,521.29x = 124,697,219.05
  5. Step 5: Solve for x
    x = 124,697,219.05/12,521.29
  6. Step 6: Final answer
    x = 9,958.82

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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.