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Finding the Fourth Proportional to 15,787.82, 21,788.92 and 9,073.74

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Solution

The fourth proportional to 15,787.82, 21,788.92 and 9,073.74 is: 12,522.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,787.82 : 21,788.92 = 9,073.74 : x
  2. Step 2: Convert to fraction form
    15,787.82/21,788.92 = 9,073.74/x
  3. Step 3: Cross multiply
    15,787.82x = 21,788.92 × 9,073.74
  4. Step 4: Simplify right side
    15,787.82x = 197,706,994.96
  5. Step 5: Solve for x
    x = 197,706,994.96/15,787.82
  6. Step 6: Final answer
    x = 12,522.75

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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.