Home / 21,407.20-29,542.02-11,975.75

Finding the Fourth Proportional to 21,407.20, 29,542.02 and 11,975.75

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Solution

The fourth proportional to 21,407.20, 29,542.02 and 11,975.75 is: 16,526.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,407.20 : 29,542.02 = 11,975.75 : x
  2. Step 2: Convert to fraction form
    21,407.20/29,542.02 = 11,975.75/x
  3. Step 3: Cross multiply
    21,407.20x = 29,542.02 × 11,975.75
  4. Step 4: Simplify right side
    21,407.20x = 353,787,846.02
  5. Step 5: Solve for x
    x = 353,787,846.02/21,407.20
  6. Step 6: Final answer
    x = 16,526.58

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.