Home / 21,137.91-31,694.54-14,125.85

Finding the Fourth Proportional to 21,137.91, 31,694.54 and 14,125.85

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Solution

The fourth proportional to 21,137.91, 31,694.54 and 14,125.85 is: 21,180.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,137.91 : 31,694.54 = 14,125.85 : x
  2. Step 2: Convert to fraction form
    21,137.91/31,694.54 = 14,125.85/x
  3. Step 3: Cross multiply
    21,137.91x = 31,694.54 × 14,125.85
  4. Step 4: Simplify right side
    21,137.91x = 447,712,088.76
  5. Step 5: Solve for x
    x = 447,712,088.76/21,137.91
  6. Step 6: Final answer
    x = 21,180.53

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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.