Home / 30,279.96-41,787.30-18,945.84

Finding the Fourth Proportional to 30,279.96, 41,787.30 and 18,945.84

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Solution

The fourth proportional to 30,279.96, 41,787.30 and 18,945.84 is: 26,145.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,279.96 : 41,787.30 = 18,945.84 : x
  2. Step 2: Convert to fraction form
    30,279.96/41,787.30 = 18,945.84/x
  3. Step 3: Cross multiply
    30,279.96x = 41,787.30 × 18,945.84
  4. Step 4: Simplify right side
    30,279.96x = 791,695,499.83
  5. Step 5: Solve for x
    x = 791,695,499.83/30,279.96
  6. Step 6: Final answer
    x = 26,145.86

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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.