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Finding the Fourth Proportional to 19,671.84, 27,147.96 and 10,719.84

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Solution

The fourth proportional to 19,671.84, 27,147.96 and 10,719.84 is: 14,793.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,671.84 : 27,147.96 = 10,719.84 : x
  2. Step 2: Convert to fraction form
    19,671.84/27,147.96 = 10,719.84/x
  3. Step 3: Cross multiply
    19,671.84x = 27,147.96 × 10,719.84
  4. Step 4: Simplify right side
    19,671.84x = 291,021,787.53
  5. Step 5: Solve for x
    x = 291,021,787.53/19,671.84
  6. Step 6: Final answer
    x = 14,793.83

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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.