Home / 22,218.47-30,660.62-12,147.30

Finding the Fourth Proportional to 22,218.47, 30,660.62 and 12,147.30

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Solution

The fourth proportional to 22,218.47, 30,660.62 and 12,147.30 is: 16,762.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,218.47 : 30,660.62 = 12,147.30 : x
  2. Step 2: Convert to fraction form
    22,218.47/30,660.62 = 12,147.30/x
  3. Step 3: Cross multiply
    22,218.47x = 30,660.62 × 12,147.30
  4. Step 4: Simplify right side
    22,218.47x = 372,443,749.33
  5. Step 5: Solve for x
    x = 372,443,749.33/22,218.47
  6. Step 6: Final answer
    x = 16,762.80

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1.5x scale

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.