Home / 30,438.35-45,667.77-19,180.61

Finding the Fourth Proportional to 30,438.35, 45,667.77 and 19,180.61

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Solution

The fourth proportional to 30,438.35, 45,667.77 and 19,180.61 is: 28,777.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,438.35 : 45,667.77 = 19,180.61 : x
  2. Step 2: Convert to fraction form
    30,438.35/45,667.77 = 19,180.61/x
  3. Step 3: Cross multiply
    30,438.35x = 45,667.77 × 19,180.61
  4. Step 4: Simplify right side
    30,438.35x = 875,935,685.94
  5. Step 5: Solve for x
    x = 875,935,685.94/30,438.35
  6. Step 6: Final answer
    x = 28,777.38

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.