Home / 21,272.16-29,355.06-11,840.52

Finding the Fourth Proportional to 21,272.16, 29,355.06 and 11,840.52

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Solution

The fourth proportional to 21,272.16, 29,355.06 and 11,840.52 is: 16,339.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,272.16 : 29,355.06 = 11,840.52 : x
  2. Step 2: Convert to fraction form
    21,272.16/29,355.06 = 11,840.52/x
  3. Step 3: Cross multiply
    21,272.16x = 29,355.06 × 11,840.52
  4. Step 4: Simplify right side
    21,272.16x = 347,579,175.03
  5. Step 5: Solve for x
    x = 347,579,175.03/21,272.16
  6. Step 6: Final answer
    x = 16,339.63

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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.