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Finding the Fourth Proportional to 11,787.63, 17,713.85 and 11,017.05

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Solution

The fourth proportional to 11,787.63, 17,713.85 and 11,017.05 is: 16,555.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,787.63 : 17,713.85 = 11,017.05 : x
  2. Step 2: Convert to fraction form
    11,787.63/17,713.85 = 11,017.05/x
  3. Step 3: Cross multiply
    11,787.63x = 17,713.85 × 11,017.05
  4. Step 4: Simplify right side
    11,787.63x = 195,154,316.06
  5. Step 5: Solve for x
    x = 195,154,316.06/11,787.63
  6. Step 6: Final answer
    x = 16,555.86

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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.