Home / 30,306.20-45,438.17-13,430.03

Finding the Fourth Proportional to 30,306.20, 45,438.17 and 13,430.03

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Solution

The fourth proportional to 30,306.20, 45,438.17 and 13,430.03 is: 20,135.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,306.20 : 45,438.17 = 13,430.03 : x
  2. Step 2: Convert to fraction form
    30,306.20/45,438.17 = 13,430.03/x
  3. Step 3: Cross multiply
    30,306.20x = 45,438.17 × 13,430.03
  4. Step 4: Simplify right side
    30,306.20x = 610,235,691.90
  5. Step 5: Solve for x
    x = 610,235,691.90/30,306.20
  6. Step 6: Final answer
    x = 20,135.67

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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.