Home / 21,420.21-32,129.38-5,837.83

Finding the Fourth Proportional to 21,420.21, 32,129.38 and 5,837.83

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Solution

The fourth proportional to 21,420.21, 32,129.38 and 5,837.83 is: 8,756.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,420.21 : 32,129.38 = 5,837.83 : x
  2. Step 2: Convert to fraction form
    21,420.21/32,129.38 = 5,837.83/x
  3. Step 3: Cross multiply
    21,420.21x = 32,129.38 × 5,837.83
  4. Step 4: Simplify right side
    21,420.21x = 187,565,858.45
  5. Step 5: Solve for x
    x = 187,565,858.45/21,420.21
  6. Step 6: Final answer
    x = 8,756.49

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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.