Home / 12,422.79-18,645.12-10,476.36

Finding the Fourth Proportional to 12,422.79, 18,645.12 and 10,476.36

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Solution

The fourth proportional to 12,422.79, 18,645.12 and 10,476.36 is: 15,723.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,422.79 : 18,645.12 = 10,476.36 : x
  2. Step 2: Convert to fraction form
    12,422.79/18,645.12 = 10,476.36/x
  3. Step 3: Cross multiply
    12,422.79x = 18,645.12 × 10,476.36
  4. Step 4: Simplify right side
    12,422.79x = 195,332,989.36
  5. Step 5: Solve for x
    x = 195,332,989.36/12,422.79
  6. Step 6: Final answer
    x = 15,723.76

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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.