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Finding the Fourth Proportional to 15,787.17, 23,679.07 and 8,383.77

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Solution

The fourth proportional to 15,787.17, 23,679.07 and 8,383.77 is: 12,574.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,787.17 : 23,679.07 = 8,383.77 : x
  2. Step 2: Convert to fraction form
    15,787.17/23,679.07 = 8,383.77/x
  3. Step 3: Cross multiply
    15,787.17x = 23,679.07 × 8,383.77
  4. Step 4: Simplify right side
    15,787.17x = 198,519,855.73
  5. Step 5: Solve for x
    x = 198,519,855.73/15,787.17
  6. Step 6: Final answer
    x = 12,574.76

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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.