Home / 21,420.20-32,131.49-6,627.96

Finding the Fourth Proportional to 21,420.20, 32,131.49 and 6,627.96

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Solution

The fourth proportional to 21,420.20, 32,131.49 and 6,627.96 is: 9,942.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,420.20 : 32,131.49 = 6,627.96 : x
  2. Step 2: Convert to fraction form
    21,420.20/32,131.49 = 6,627.96/x
  3. Step 3: Cross multiply
    21,420.20x = 32,131.49 × 6,627.96
  4. Step 4: Simplify right side
    21,420.20x = 212,966,197.32
  5. Step 5: Solve for x
    x = 212,966,197.32/21,420.20
  6. Step 6: Final answer
    x = 9,942.31

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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.