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Finding the Fourth Proportional to 15,674.13, 21,630.24 and 8,600.54

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Solution

The fourth proportional to 15,674.13, 21,630.24 and 8,600.54 is: 11,868.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,674.13 : 21,630.24 = 8,600.54 : x
  2. Step 2: Convert to fraction form
    15,674.13/21,630.24 = 8,600.54/x
  3. Step 3: Cross multiply
    15,674.13x = 21,630.24 × 8,600.54
  4. Step 4: Simplify right side
    15,674.13x = 186,031,636.18
  5. Step 5: Solve for x
    x = 186,031,636.18/15,674.13
  6. Step 6: Final answer
    x = 11,868.71

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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.