Home / 28,785.03-39,716.42-16,209.78

Finding the Fourth Proportional to 28,785.03, 39,716.42 and 16,209.78

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Solution

The fourth proportional to 28,785.03, 39,716.42 and 16,209.78 is: 22,365.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,785.03 : 39,716.42 = 16,209.78 : x
  2. Step 2: Convert to fraction form
    28,785.03/39,716.42 = 16,209.78/x
  3. Step 3: Cross multiply
    28,785.03x = 39,716.42 × 16,209.78
  4. Step 4: Simplify right side
    28,785.03x = 643,794,430.59
  5. Step 5: Solve for x
    x = 643,794,430.59/28,785.03
  6. Step 6: Final answer
    x = 22,365.60

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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.