Home / 30,156.60-41,616.54-18,218.28

Finding the Fourth Proportional to 30,156.60, 41,616.54 and 18,218.28

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Solution

The fourth proportional to 30,156.60, 41,616.54 and 18,218.28 is: 25,141.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,156.60 : 41,616.54 = 18,218.28 : x
  2. Step 2: Convert to fraction form
    30,156.60/41,616.54 = 18,218.28/x
  3. Step 3: Cross multiply
    30,156.60x = 41,616.54 × 18,218.28
  4. Step 4: Simplify right side
    30,156.60x = 758,181,778.35
  5. Step 5: Solve for x
    x = 758,181,778.35/30,156.60
  6. Step 6: Final answer
    x = 25,141.49

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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.