Home / 21,415.87-29,553.73-12,337.91

Finding the Fourth Proportional to 21,415.87, 29,553.73 and 12,337.91

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Solution

The fourth proportional to 21,415.87, 29,553.73 and 12,337.91 is: 17,026.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,415.87 : 29,553.73 = 12,337.91 : x
  2. Step 2: Convert to fraction form
    21,415.87/29,553.73 = 12,337.91/x
  3. Step 3: Cross multiply
    21,415.87x = 29,553.73 × 12,337.91
  4. Step 4: Simplify right side
    21,415.87x = 364,631,260.90
  5. Step 5: Solve for x
    x = 364,631,260.90/21,415.87
  6. Step 6: Final answer
    x = 17,026.22

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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.