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Finding the Fourth Proportional to 27,191.84, 40,787.76 and 7,472.48

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Solution

The fourth proportional to 27,191.84, 40,787.76 and 7,472.48 is: 11,208.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,191.84 : 40,787.76 = 7,472.48 : x
  2. Step 2: Convert to fraction form
    27,191.84/40,787.76 = 7,472.48/x
  3. Step 3: Cross multiply
    27,191.84x = 40,787.76 × 7,472.48
  4. Step 4: Simplify right side
    27,191.84x = 304,785,720.84
  5. Step 5: Solve for x
    x = 304,785,720.84/27,191.84
  6. Step 6: Final answer
    x = 11,208.72

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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.