Home / 12,066.80-18,100.20-8,130.20

Finding the Fourth Proportional to 12,066.80, 18,100.20 and 8,130.20

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Solution

The fourth proportional to 12,066.80, 18,100.20 and 8,130.20 is: 12,195.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,066.80 : 18,100.20 = 8,130.20 : x
  2. Step 2: Convert to fraction form
    12,066.80/18,100.20 = 8,130.20/x
  3. Step 3: Cross multiply
    12,066.80x = 18,100.20 × 8,130.20
  4. Step 4: Simplify right side
    12,066.80x = 147,158,246.04
  5. Step 5: Solve for x
    x = 147,158,246.04/12,066.80
  6. Step 6: Final answer
    x = 12,195.30

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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.