Home / 21,309.95-29,406.08-11,749.82

Finding the Fourth Proportional to 21,309.95, 29,406.08 and 11,749.82

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Solution

The fourth proportional to 21,309.95, 29,406.08 and 11,749.82 is: 16,213.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,309.95 : 29,406.08 = 11,749.82 : x
  2. Step 2: Convert to fraction form
    21,309.95/29,406.08 = 11,749.82/x
  3. Step 3: Cross multiply
    21,309.95x = 29,406.08 × 11,749.82
  4. Step 4: Simplify right side
    21,309.95x = 345,516,029.25
  5. Step 5: Solve for x
    x = 345,516,029.25/21,309.95
  6. Step 6: Final answer
    x = 16,213.83

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1.5x scale

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.