Home / 28,469.66-39,288.15-15,894.41

Finding the Fourth Proportional to 28,469.66, 39,288.15 and 15,894.41

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Solution

The fourth proportional to 28,469.66, 39,288.15 and 15,894.41 is: 21,934.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,469.66 : 39,288.15 = 15,894.41 : x
  2. Step 2: Convert to fraction form
    28,469.66/39,288.15 = 15,894.41/x
  3. Step 3: Cross multiply
    28,469.66x = 39,288.15 × 15,894.41
  4. Step 4: Simplify right side
    28,469.66x = 624,461,767.80
  5. Step 5: Solve for x
    x = 624,461,767.80/28,469.66
  6. Step 6: Final answer
    x = 21,934.29

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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.