Home / 30,257.04-45,390.42-12,731.88

Finding the Fourth Proportional to 30,257.04, 45,390.42 and 12,731.88

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Solution

The fourth proportional to 30,257.04, 45,390.42 and 12,731.88 is: 19,099.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,257.04 : 45,390.42 = 12,731.88 : x
  2. Step 2: Convert to fraction form
    30,257.04/45,390.42 = 12,731.88/x
  3. Step 3: Cross multiply
    30,257.04x = 45,390.42 × 12,731.88
  4. Step 4: Simplify right side
    30,257.04x = 577,905,380.59
  5. Step 5: Solve for x
    x = 577,905,380.59/30,257.04
  6. Step 6: Final answer
    x = 19,099.87

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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.