Home / 21,211.53-31,822.40-14,983.66

Finding the Fourth Proportional to 21,211.53, 31,822.40 and 14,983.66

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Solution

The fourth proportional to 21,211.53, 31,822.40 and 14,983.66 is: 22,479.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,211.53 : 31,822.40 = 14,983.66 : x
  2. Step 2: Convert to fraction form
    21,211.53/31,822.40 = 14,983.66/x
  3. Step 3: Cross multiply
    21,211.53x = 31,822.40 × 14,983.66
  4. Step 4: Simplify right side
    21,211.53x = 476,816,021.98
  5. Step 5: Solve for x
    x = 476,816,021.98/21,211.53
  6. Step 6: Final answer
    x = 22,479.10

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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.