Home / 21,161.88-31,733.64-11,298.96

Finding the Fourth Proportional to 21,161.88, 31,733.64 and 11,298.96

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Solution

The fourth proportional to 21,161.88, 31,733.64 and 11,298.96 is: 16,943.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,161.88 : 31,733.64 = 11,298.96 : x
  2. Step 2: Convert to fraction form
    21,161.88/31,733.64 = 11,298.96/x
  3. Step 3: Cross multiply
    21,161.88x = 31,733.64 × 11,298.96
  4. Step 4: Simplify right side
    21,161.88x = 358,557,129.01
  5. Step 5: Solve for x
    x = 358,557,129.01/21,161.88
  6. Step 6: Final answer
    x = 16,943.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.