Home / 15,554.38-21,452.91-9,965.90

Finding the Fourth Proportional to 15,554.38, 21,452.91 and 9,965.90

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Solution

The fourth proportional to 15,554.38, 21,452.91 and 9,965.90 is: 13,745.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,554.38 : 21,452.91 = 9,965.90 : x
  2. Step 2: Convert to fraction form
    15,554.38/21,452.91 = 9,965.90/x
  3. Step 3: Cross multiply
    15,554.38x = 21,452.91 × 9,965.90
  4. Step 4: Simplify right side
    15,554.38x = 213,797,555.77
  5. Step 5: Solve for x
    x = 213,797,555.77/15,554.38
  6. Step 6: Final answer
    x = 13,745.17

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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.