Home / 13,298.45-18,218.81-12,799.90

Finding the Fourth Proportional to 13,298.45, 18,218.81 and 12,799.90

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Solution

The fourth proportional to 13,298.45, 18,218.81 and 12,799.90 is: 17,535.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,298.45 : 18,218.81 = 12,799.90 : x
  2. Step 2: Convert to fraction form
    13,298.45/18,218.81 = 12,799.90/x
  3. Step 3: Cross multiply
    13,298.45x = 18,218.81 × 12,799.90
  4. Step 4: Simplify right side
    13,298.45x = 233,198,836.57
  5. Step 5: Solve for x
    x = 233,198,836.57/13,298.45
  6. Step 6: Final answer
    x = 17,535.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.