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Finding the Fourth Proportional to 25,999.84, 35,880.10 and 15,787.97

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Solution

The fourth proportional to 25,999.84, 35,880.10 and 15,787.97 is: 21,787.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,999.84 : 35,880.10 = 15,787.97 : x
  2. Step 2: Convert to fraction form
    25,999.84/35,880.10 = 15,787.97/x
  3. Step 3: Cross multiply
    25,999.84x = 35,880.10 × 15,787.97
  4. Step 4: Simplify right side
    25,999.84x = 566,473,942.40
  5. Step 5: Solve for x
    x = 566,473,942.40/25,999.84
  6. Step 6: Final answer
    x = 21,787.59

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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.