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Finding the Fourth Proportional to 25,787.70, 38,693.70 and 19,226.70

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Solution

The fourth proportional to 25,787.70, 38,693.70 and 19,226.70 is: 28,849.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,787.70 : 38,693.70 = 19,226.70 : x
  2. Step 2: Convert to fraction form
    25,787.70/38,693.70 = 19,226.70/x
  3. Step 3: Cross multiply
    25,787.70x = 38,693.70 × 19,226.70
  4. Step 4: Simplify right side
    25,787.70x = 743,952,161.79
  5. Step 5: Solve for x
    x = 743,952,161.79/25,787.70
  6. Step 6: Final answer
    x = 28,849.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.