Home / 20,759.36-28,618.28-13,673.48

Finding the Fourth Proportional to 20,759.36, 28,618.28 and 13,673.48

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Solution

The fourth proportional to 20,759.36, 28,618.28 and 13,673.48 is: 18,849.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,759.36 : 28,618.28 = 13,673.48 : x
  2. Step 2: Convert to fraction form
    20,759.36/28,618.28 = 13,673.48/x
  3. Step 3: Cross multiply
    20,759.36x = 28,618.28 × 13,673.48
  4. Step 4: Simplify right side
    20,759.36x = 391,311,479.21
  5. Step 5: Solve for x
    x = 391,311,479.21/20,759.36
  6. Step 6: Final answer
    x = 18,849.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.