Home / 21,433.28-29,578.30-12,001.82

Finding the Fourth Proportional to 21,433.28, 29,578.30 and 12,001.82

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Solution

The fourth proportional to 21,433.28, 29,578.30 and 12,001.82 is: 16,562.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,433.28 : 29,578.30 = 12,001.82 : x
  2. Step 2: Convert to fraction form
    21,433.28/29,578.30 = 12,001.82/x
  3. Step 3: Cross multiply
    21,433.28x = 29,578.30 × 12,001.82
  4. Step 4: Simplify right side
    21,433.28x = 354,993,432.51
  5. Step 5: Solve for x
    x = 354,993,432.51/21,433.28
  6. Step 6: Final answer
    x = 16,562.72

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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.