Home / 21,631.84-29,846.28-12,674.54

Finding the Fourth Proportional to 21,631.84, 29,846.28 and 12,674.54

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Solution

The fourth proportional to 21,631.84, 29,846.28 and 12,674.54 is: 17,487.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,631.84 : 29,846.28 = 12,674.54 : x
  2. Step 2: Convert to fraction form
    21,631.84/29,846.28 = 12,674.54/x
  3. Step 3: Cross multiply
    21,631.84x = 29,846.28 × 12,674.54
  4. Step 4: Simplify right side
    21,631.84x = 378,287,869.71
  5. Step 5: Solve for x
    x = 378,287,869.71/21,631.84
  6. Step 6: Final answer
    x = 17,487.55

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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.