Home / 12,208.46-18,320.88-6,665.78

Finding the Fourth Proportional to 12,208.46, 18,320.88 and 6,665.78

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Solution

The fourth proportional to 12,208.46, 18,320.88 and 6,665.78 is: 10,003.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,208.46 : 18,320.88 = 6,665.78 : x
  2. Step 2: Convert to fraction form
    12,208.46/18,320.88 = 6,665.78/x
  3. Step 3: Cross multiply
    12,208.46x = 18,320.88 × 6,665.78
  4. Step 4: Simplify right side
    12,208.46x = 122,122,955.49
  5. Step 5: Solve for x
    x = 122,122,955.49/12,208.46
  6. Step 6: Final answer
    x = 10,003.14

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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.