Home / 13,578.24-20,378.88-10,859.52

Finding the Fourth Proportional to 13,578.24, 20,378.88 and 10,859.52

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Solution

The fourth proportional to 13,578.24, 20,378.88 and 10,859.52 is: 16,298.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,578.24 : 20,378.88 = 10,859.52 : x
  2. Step 2: Convert to fraction form
    13,578.24/20,378.88 = 10,859.52/x
  3. Step 3: Cross multiply
    13,578.24x = 20,378.88 × 10,859.52
  4. Step 4: Simplify right side
    13,578.24x = 221,304,854.94
  5. Step 5: Solve for x
    x = 221,304,854.94/13,578.24
  6. Step 6: Final answer
    x = 16,298.49

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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.