Home / 28,348.12-39,120.54-15,772.84

Finding the Fourth Proportional to 28,348.12, 39,120.54 and 15,772.84

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Solution

The fourth proportional to 28,348.12, 39,120.54 and 15,772.84 is: 21,766.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,348.12 : 39,120.54 = 15,772.84 : x
  2. Step 2: Convert to fraction form
    28,348.12/39,120.54 = 15,772.84/x
  3. Step 3: Cross multiply
    28,348.12x = 39,120.54 × 15,772.84
  4. Step 4: Simplify right side
    28,348.12x = 617,042,018.13
  5. Step 5: Solve for x
    x = 617,042,018.13/28,348.12
  6. Step 6: Final answer
    x = 21,766.59

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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.