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Finding the Fourth Proportional to 15,608.94, 21,540.12 and 8,894.97

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Solution

The fourth proportional to 15,608.94, 21,540.12 and 8,894.97 is: 12,274.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,608.94 : 21,540.12 = 8,894.97 : x
  2. Step 2: Convert to fraction form
    15,608.94/21,540.12 = 8,894.97/x
  3. Step 3: Cross multiply
    15,608.94x = 21,540.12 × 8,894.97
  4. Step 4: Simplify right side
    15,608.94x = 191,598,721.20
  5. Step 5: Solve for x
    x = 191,598,721.20/15,608.94
  6. Step 6: Final answer
    x = 12,274.93

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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.