Home / 15,223.66-21,008.14-8,850.78

Finding the Fourth Proportional to 15,223.66, 21,008.14 and 8,850.78

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Solution

The fourth proportional to 15,223.66, 21,008.14 and 8,850.78 is: 12,213.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,223.66 : 21,008.14 = 8,850.78 : x
  2. Step 2: Convert to fraction form
    15,223.66/21,008.14 = 8,850.78/x
  3. Step 3: Cross multiply
    15,223.66x = 21,008.14 × 8,850.78
  4. Step 4: Simplify right side
    15,223.66x = 185,938,425.35
  5. Step 5: Solve for x
    x = 185,938,425.35/15,223.66
  6. Step 6: Final answer
    x = 12,213.78

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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.