Home / 12,799.84-19,309.24-12,406.72

Finding the Fourth Proportional to 12,799.84, 19,309.24 and 12,406.72

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Solution

The fourth proportional to 12,799.84, 19,309.24 and 12,406.72 is: 18,716.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,799.84 : 19,309.24 = 12,406.72 : x
  2. Step 2: Convert to fraction form
    12,799.84/19,309.24 = 12,406.72/x
  3. Step 3: Cross multiply
    12,799.84x = 19,309.24 × 12,406.72
  4. Step 4: Simplify right side
    12,799.84x = 239,564,334.09
  5. Step 5: Solve for x
    x = 239,564,334.09/12,799.84
  6. Step 6: Final answer
    x = 18,716.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.