Home / 21,149.74-31,664.13-14,211.82

Finding the Fourth Proportional to 21,149.74, 31,664.13 and 14,211.82

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Solution

The fourth proportional to 21,149.74, 31,664.13 and 14,211.82 is: 21,277.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,149.74 : 31,664.13 = 14,211.82 : x
  2. Step 2: Convert to fraction form
    21,149.74/31,664.13 = 14,211.82/x
  3. Step 3: Cross multiply
    21,149.74x = 31,664.13 × 14,211.82
  4. Step 4: Simplify right side
    21,149.74x = 450,004,916.02
  5. Step 5: Solve for x
    x = 450,004,916.02/21,149.74
  6. Step 6: Final answer
    x = 21,277.09

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.