Home / 12,261.30-16,921.84-7,227.08

Finding the Fourth Proportional to 12,261.30, 16,921.84 and 7,227.08

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Solution

The fourth proportional to 12,261.30, 16,921.84 and 7,227.08 is: 9,974.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,261.30 : 16,921.84 = 7,227.08 : x
  2. Step 2: Convert to fraction form
    12,261.30/16,921.84 = 7,227.08/x
  3. Step 3: Cross multiply
    12,261.30x = 16,921.84 × 7,227.08
  4. Step 4: Simplify right side
    12,261.30x = 122,295,491.43
  5. Step 5: Solve for x
    x = 122,295,491.43/12,261.30
  6. Step 6: Final answer
    x = 9,974.10

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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.