Home / 15,895.12-21,935.94-8,821.54

Finding the Fourth Proportional to 15,895.12, 21,935.94 and 8,821.54

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Solution

The fourth proportional to 15,895.12, 21,935.94 and 8,821.54 is: 12,174.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,895.12 : 21,935.94 = 8,821.54 : x
  2. Step 2: Convert to fraction form
    15,895.12/21,935.94 = 8,821.54/x
  3. Step 3: Cross multiply
    15,895.12x = 21,935.94 × 8,821.54
  4. Step 4: Simplify right side
    15,895.12x = 193,508,772.15
  5. Step 5: Solve for x
    x = 193,508,772.15/15,895.12
  6. Step 6: Final answer
    x = 12,174.10

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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.