Home / 25,820.20-38,672.70-21,212.20

Finding the Fourth Proportional to 25,820.20, 38,672.70 and 21,212.20

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Solution

The fourth proportional to 25,820.20, 38,672.70 and 21,212.20 is: 31,770.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,820.20 : 38,672.70 = 21,212.20 : x
  2. Step 2: Convert to fraction form
    25,820.20/38,672.70 = 21,212.20/x
  3. Step 3: Cross multiply
    25,820.20x = 38,672.70 × 21,212.20
  4. Step 4: Simplify right side
    25,820.20x = 820,333,046.94
  5. Step 5: Solve for x
    x = 820,333,046.94/25,820.20
  6. Step 6: Final answer
    x = 31,770.98

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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.