Home / 12,066.76-18,107.10-6,520.20

Finding the Fourth Proportional to 12,066.76, 18,107.10 and 6,520.20

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Solution

The fourth proportional to 12,066.76, 18,107.10 and 6,520.20 is: 9,784.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,066.76 : 18,107.10 = 6,520.20 : x
  2. Step 2: Convert to fraction form
    12,066.76/18,107.10 = 6,520.20/x
  3. Step 3: Cross multiply
    12,066.76x = 18,107.10 × 6,520.20
  4. Step 4: Simplify right side
    12,066.76x = 118,061,913.42
  5. Step 5: Solve for x
    x = 118,061,913.42/12,066.76
  6. Step 6: Final answer
    x = 9,784.06

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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.