Home / 21,339.94-29,449.11-11,779.83

Finding the Fourth Proportional to 21,339.94, 29,449.11 and 11,779.83

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Solution

The fourth proportional to 21,339.94, 29,449.11 and 11,779.83 is: 16,256.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,339.94 : 29,449.11 = 11,779.83 : x
  2. Step 2: Convert to fraction form
    21,339.94/29,449.11 = 11,779.83/x
  3. Step 3: Cross multiply
    21,339.94x = 29,449.11 × 11,779.83
  4. Step 4: Simplify right side
    21,339.94x = 346,905,509.45
  5. Step 5: Solve for x
    x = 346,905,509.45/21,339.94
  6. Step 6: Final answer
    x = 16,256.16

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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.