Home / 21,423.48-32,131.26-6,629.64

Finding the Fourth Proportional to 21,423.48, 32,131.26 and 6,629.64

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Solution

The fourth proportional to 21,423.48, 32,131.26 and 6,629.64 is: 9,943.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,423.48 : 32,131.26 = 6,629.64 : x
  2. Step 2: Convert to fraction form
    21,423.48/32,131.26 = 6,629.64/x
  3. Step 3: Cross multiply
    21,423.48x = 32,131.26 × 6,629.64
  4. Step 4: Simplify right side
    21,423.48x = 213,018,686.55
  5. Step 5: Solve for x
    x = 213,018,686.55/21,423.48
  6. Step 6: Final answer
    x = 9,943.23

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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.