Home / 21,701.58-29,947.92-12,749.90

Finding the Fourth Proportional to 21,701.58, 29,947.92 and 12,749.90

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Solution

The fourth proportional to 21,701.58, 29,947.92 and 12,749.90 is: 17,594.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,701.58 : 29,947.92 = 12,749.90 : x
  2. Step 2: Convert to fraction form
    21,701.58/29,947.92 = 12,749.90/x
  3. Step 3: Cross multiply
    21,701.58x = 29,947.92 × 12,749.90
  4. Step 4: Simplify right side
    21,701.58x = 381,832,985.21
  5. Step 5: Solve for x
    x = 381,832,985.21/21,701.58
  6. Step 6: Final answer
    x = 17,594.71

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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.