Home / 21,002.48-28,984.64-12,049.92

Finding the Fourth Proportional to 21,002.48, 28,984.64 and 12,049.92

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Solution

The fourth proportional to 21,002.48, 28,984.64 and 12,049.92 is: 16,629.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,002.48 : 28,984.64 = 12,049.92 : x
  2. Step 2: Convert to fraction form
    21,002.48/28,984.64 = 12,049.92/x
  3. Step 3: Cross multiply
    21,002.48x = 28,984.64 × 12,049.92
  4. Step 4: Simplify right side
    21,002.48x = 349,262,593.23
  5. Step 5: Solve for x
    x = 349,262,593.23/21,002.48
  6. Step 6: Final answer
    x = 16,629.59

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Why These Related Problems?

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