Home / 12,217.18-18,309.36-6,662.20

Finding the Fourth Proportional to 12,217.18, 18,309.36 and 6,662.20

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Solution

The fourth proportional to 12,217.18, 18,309.36 and 6,662.20 is: 9,984.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,217.18 : 18,309.36 = 6,662.20 : x
  2. Step 2: Convert to fraction form
    12,217.18/18,309.36 = 6,662.20/x
  3. Step 3: Cross multiply
    12,217.18x = 18,309.36 × 6,662.20
  4. Step 4: Simplify right side
    12,217.18x = 121,980,618.19
  5. Step 5: Solve for x
    x = 121,980,618.19/12,217.18
  6. Step 6: Final answer
    x = 9,984.35

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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.