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Finding the Fourth Proportional to 25,480.34, 35,100.12 and 21,691.34

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Solution

The fourth proportional to 25,480.34, 35,100.12 and 21,691.34 is: 29,880.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,480.34 : 35,100.12 = 21,691.34 : x
  2. Step 2: Convert to fraction form
    25,480.34/35,100.12 = 21,691.34/x
  3. Step 3: Cross multiply
    25,480.34x = 35,100.12 × 21,691.34
  4. Step 4: Simplify right side
    25,480.34x = 761,368,636.96
  5. Step 5: Solve for x
    x = 761,368,636.96/25,480.34
  6. Step 6: Final answer
    x = 29,880.63

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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.