Home / 21,110.53-31,656.48-11,247.70

Finding the Fourth Proportional to 21,110.53, 31,656.48 and 11,247.70

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Solution

The fourth proportional to 21,110.53, 31,656.48 and 11,247.70 is: 16,866.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,110.53 : 31,656.48 = 11,247.70 : x
  2. Step 2: Convert to fraction form
    21,110.53/31,656.48 = 11,247.70/x
  3. Step 3: Cross multiply
    21,110.53x = 31,656.48 × 11,247.70
  4. Step 4: Simplify right side
    21,110.53x = 356,062,590.10
  5. Step 5: Solve for x
    x = 356,062,590.10/21,110.53
  6. Step 6: Final answer
    x = 16,866.59

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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.