Home / 22,218.30-30,660.36-12,147.09

Finding the Fourth Proportional to 22,218.30, 30,660.36 and 12,147.09

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Solution

The fourth proportional to 22,218.30, 30,660.36 and 12,147.09 is: 16,762.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,218.30 : 30,660.36 = 12,147.09 : x
  2. Step 2: Convert to fraction form
    22,218.30/30,660.36 = 12,147.09/x
  3. Step 3: Cross multiply
    22,218.30x = 30,660.36 × 12,147.09
  4. Step 4: Simplify right side
    22,218.30x = 372,434,152.35
  5. Step 5: Solve for x
    x = 372,434,152.35/22,218.30
  6. Step 6: Final answer
    x = 16,762.50

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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.