Home / 28,120.48-38,791.18-18,550.90

Finding the Fourth Proportional to 28,120.48, 38,791.18 and 18,550.90

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Solution

The fourth proportional to 28,120.48, 38,791.18 and 18,550.90 is: 25,590.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,120.48 : 38,791.18 = 18,550.90 : x
  2. Step 2: Convert to fraction form
    28,120.48/38,791.18 = 18,550.90/x
  3. Step 3: Cross multiply
    28,120.48x = 38,791.18 × 18,550.90
  4. Step 4: Simplify right side
    28,120.48x = 719,611,301.06
  5. Step 5: Solve for x
    x = 719,611,301.06/28,120.48
  6. Step 6: Final answer
    x = 25,590.29

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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.