Home / 15,418.82-21,277.99-8,345.23

Finding the Fourth Proportional to 15,418.82, 21,277.99 and 8,345.23

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Solution

The fourth proportional to 15,418.82, 21,277.99 and 8,345.23 is: 11,516.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,418.82 : 21,277.99 = 8,345.23 : x
  2. Step 2: Convert to fraction form
    15,418.82/21,277.99 = 8,345.23/x
  3. Step 3: Cross multiply
    15,418.82x = 21,277.99 × 8,345.23
  4. Step 4: Simplify right side
    15,418.82x = 177,569,677.72
  5. Step 5: Solve for x
    x = 177,569,677.72/15,418.82
  6. Step 6: Final answer
    x = 11,516.42

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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.