Home / 25,775.16-38,838.30-21,197.72

Finding the Fourth Proportional to 25,775.16, 38,838.30 and 21,197.72

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Solution

The fourth proportional to 25,775.16, 38,838.30 and 21,197.72 is: 31,940.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,775.16 : 38,838.30 = 21,197.72 : x
  2. Step 2: Convert to fraction form
    25,775.16/38,838.30 = 21,197.72/x
  3. Step 3: Cross multiply
    25,775.16x = 38,838.30 × 21,197.72
  4. Step 4: Simplify right side
    25,775.16x = 823,283,408.68
  5. Step 5: Solve for x
    x = 823,283,408.68/25,775.16
  6. Step 6: Final answer
    x = 31,940.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.