Home / 12,001.68-18,004.32-4,209.12

Finding the Fourth Proportional to 12,001.68, 18,004.32 and 4,209.12

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Solution

The fourth proportional to 12,001.68, 18,004.32 and 4,209.12 is: 6,314.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,001.68 : 18,004.32 = 4,209.12 : x
  2. Step 2: Convert to fraction form
    12,001.68/18,004.32 = 4,209.12/x
  3. Step 3: Cross multiply
    12,001.68x = 18,004.32 × 4,209.12
  4. Step 4: Simplify right side
    12,001.68x = 75,782,343.40
  5. Step 5: Solve for x
    x = 75,782,343.40/12,001.68
  6. Step 6: Final answer
    x = 6,314.31

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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.