Home / 28,348.80-39,121.29-15,773.55

Finding the Fourth Proportional to 28,348.80, 39,121.29 and 15,773.55

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Solution

The fourth proportional to 28,348.80, 39,121.29 and 15,773.55 is: 21,767.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,348.80 : 39,121.29 = 15,773.55 : x
  2. Step 2: Convert to fraction form
    28,348.80/39,121.29 = 15,773.55/x
  3. Step 3: Cross multiply
    28,348.80x = 39,121.29 × 15,773.55
  4. Step 4: Simplify right side
    28,348.80x = 617,081,623.88
  5. Step 5: Solve for x
    x = 617,081,623.88/28,348.80
  6. Step 6: Final answer
    x = 21,767.47

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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.