Home / 21,038.43-29,029.87-12,086.31

Finding the Fourth Proportional to 21,038.43, 29,029.87 and 12,086.31

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Solution

The fourth proportional to 21,038.43, 29,029.87 and 12,086.31 is: 16,677.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,038.43 : 29,029.87 = 12,086.31 : x
  2. Step 2: Convert to fraction form
    21,038.43/29,029.87 = 12,086.31/x
  3. Step 3: Cross multiply
    21,038.43x = 29,029.87 × 12,086.31
  4. Step 4: Simplify right side
    21,038.43x = 350,864,008.08
  5. Step 5: Solve for x
    x = 350,864,008.08/21,038.43
  6. Step 6: Final answer
    x = 16,677.29

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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.