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Finding the Fourth Proportional to 15,233.70, 21,021.19 and 8,860.42

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Solution

The fourth proportional to 15,233.70, 21,021.19 and 8,860.42 is: 12,226.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,233.70 : 21,021.19 = 8,860.42 : x
  2. Step 2: Convert to fraction form
    15,233.70/21,021.19 = 8,860.42/x
  3. Step 3: Cross multiply
    15,233.70x = 21,021.19 × 8,860.42
  4. Step 4: Simplify right side
    15,233.70x = 186,256,572.30
  5. Step 5: Solve for x
    x = 186,256,572.30/15,233.70
  6. Step 6: Final answer
    x = 12,226.61

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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.