Home / 30,134.35-45,207.20-12,123.93

Finding the Fourth Proportional to 30,134.35, 45,207.20 and 12,123.93

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Solution

The fourth proportional to 30,134.35, 45,207.20 and 12,123.93 is: 18,188.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,134.35 : 45,207.20 = 12,123.93 : x
  2. Step 2: Convert to fraction form
    30,134.35/45,207.20 = 12,123.93/x
  3. Step 3: Cross multiply
    30,134.35x = 45,207.20 × 12,123.93
  4. Step 4: Simplify right side
    30,134.35x = 548,088,928.30
  5. Step 5: Solve for x
    x = 548,088,928.30/30,134.35
  6. Step 6: Final answer
    x = 18,188.18

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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.