Home / 21,615.24-32,420.13-5,821.53

Finding the Fourth Proportional to 21,615.24, 32,420.13 and 5,821.53

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Solution

The fourth proportional to 21,615.24, 32,420.13 and 5,821.53 is: 8,731.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,615.24 : 32,420.13 = 5,821.53 : x
  2. Step 2: Convert to fraction form
    21,615.24/32,420.13 = 5,821.53/x
  3. Step 3: Cross multiply
    21,615.24x = 32,420.13 × 5,821.53
  4. Step 4: Simplify right side
    21,615.24x = 188,734,759.40
  5. Step 5: Solve for x
    x = 188,734,759.40/21,615.24
  6. Step 6: Final answer
    x = 8,731.56

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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.