Home / 12,210.82-18,295.34-6,668.07

Finding the Fourth Proportional to 12,210.82, 18,295.34 and 6,668.07

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Solution

The fourth proportional to 12,210.82, 18,295.34 and 6,668.07 is: 9,990.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,210.82 : 18,295.34 = 6,668.07 : x
  2. Step 2: Convert to fraction form
    12,210.82/18,295.34 = 6,668.07/x
  3. Step 3: Cross multiply
    12,210.82x = 18,295.34 × 6,668.07
  4. Step 4: Simplify right side
    12,210.82x = 121,994,607.79
  5. Step 5: Solve for x
    x = 121,994,607.79/12,210.82
  6. Step 6: Final answer
    x = 9,990.70

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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.