Home / 35,787.28-49,381.12-19,871.84

Finding the Fourth Proportional to 35,787.28, 49,381.12 and 19,871.84

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Solution

The fourth proportional to 35,787.28, 49,381.12 and 19,871.84 is: 27,420.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,787.28 : 49,381.12 = 19,871.84 : x
  2. Step 2: Convert to fraction form
    35,787.28/49,381.12 = 19,871.84/x
  3. Step 3: Cross multiply
    35,787.28x = 49,381.12 × 19,871.84
  4. Step 4: Simplify right side
    35,787.28x = 981,293,715.66
  5. Step 5: Solve for x
    x = 981,293,715.66/35,787.28
  6. Step 6: Final answer
    x = 27,420.18

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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.