Home / 21,512.80-32,269.20-19,216.45

Finding the Fourth Proportional to 21,512.80, 32,269.20 and 19,216.45

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Solution

The fourth proportional to 21,512.80, 32,269.20 and 19,216.45 is: 28,824.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,512.80 : 32,269.20 = 19,216.45 : x
  2. Step 2: Convert to fraction form
    21,512.80/32,269.20 = 19,216.45/x
  3. Step 3: Cross multiply
    21,512.80x = 32,269.20 × 19,216.45
  4. Step 4: Simplify right side
    21,512.80x = 620,099,468.34
  5. Step 5: Solve for x
    x = 620,099,468.34/21,512.80
  6. Step 6: Final answer
    x = 28,824.68

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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.