Home / 21,421.88-32,129.52-5,840.72

Finding the Fourth Proportional to 21,421.88, 32,129.52 and 5,840.72

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Solution

The fourth proportional to 21,421.88, 32,129.52 and 5,840.72 is: 8,760.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,421.88 : 32,129.52 = 5,840.72 : x
  2. Step 2: Convert to fraction form
    21,421.88/32,129.52 = 5,840.72/x
  3. Step 3: Cross multiply
    21,421.88x = 32,129.52 × 5,840.72
  4. Step 4: Simplify right side
    21,421.88x = 187,659,530.05
  5. Step 5: Solve for x
    x = 187,659,530.05/21,421.88
  6. Step 6: Final answer
    x = 8,760.18

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.