Home / 21,386.72-29,512.44-11,826.05

Finding the Fourth Proportional to 21,386.72, 29,512.44 and 11,826.05

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Solution

The fourth proportional to 21,386.72, 29,512.44 and 11,826.05 is: 16,319.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,386.72 : 29,512.44 = 11,826.05 : x
  2. Step 2: Convert to fraction form
    21,386.72/29,512.44 = 11,826.05/x
  3. Step 3: Cross multiply
    21,386.72x = 29,512.44 × 11,826.05
  4. Step 4: Simplify right side
    21,386.72x = 349,015,443.50
  5. Step 5: Solve for x
    x = 349,015,443.50/21,386.72
  6. Step 6: Final answer
    x = 16,319.26

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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.