Home / 20,531.32-30,822.48-20,436.56

Finding the Fourth Proportional to 20,531.32, 30,822.48 and 20,436.56

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Solution

The fourth proportional to 20,531.32, 30,822.48 and 20,436.56 is: 30,680.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,531.32 : 30,822.48 = 20,436.56 : x
  2. Step 2: Convert to fraction form
    20,531.32/30,822.48 = 20,436.56/x
  3. Step 3: Cross multiply
    20,531.32x = 30,822.48 × 20,436.56
  4. Step 4: Simplify right side
    20,531.32x = 629,905,461.87
  5. Step 5: Solve for x
    x = 629,905,461.87/20,531.32
  6. Step 6: Final answer
    x = 30,680.22

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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.