Home / 12,161.30-18,240.60-9,966.20

Finding the Fourth Proportional to 12,161.30, 18,240.60 and 9,966.20

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Solution

The fourth proportional to 12,161.30, 18,240.60 and 9,966.20 is: 14,948.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,161.30 : 18,240.60 = 9,966.20 : x
  2. Step 2: Convert to fraction form
    12,161.30/18,240.60 = 9,966.20/x
  3. Step 3: Cross multiply
    12,161.30x = 18,240.60 × 9,966.20
  4. Step 4: Simplify right side
    12,161.30x = 181,789,467.72
  5. Step 5: Solve for x
    x = 181,789,467.72/12,161.30
  6. Step 6: Final answer
    x = 14,948.19

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1.5x scale

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.