Home / 15,674.55-21,630.78-8,601

Finding the Fourth Proportional to 15,674.55, 21,630.78 and 8,601

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Solution

The fourth proportional to 15,674.55, 21,630.78 and 8,601 is: 11,869.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,674.55 : 21,630.78 = 8,601 : x
  2. Step 2: Convert to fraction form
    15,674.55/21,630.78 = 8,601/x
  3. Step 3: Cross multiply
    15,674.55x = 21,630.78 × 8,601
  4. Step 4: Simplify right side
    15,674.55x = 186,046,338.78
  5. Step 5: Solve for x
    x = 186,046,338.78/15,674.55
  6. Step 6: Final answer
    x = 11,869.33

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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.