Home / 30,309.90-45,469.65-9,245.12

Finding the Fourth Proportional to 30,309.90, 45,469.65 and 9,245.12

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Solution

The fourth proportional to 30,309.90, 45,469.65 and 9,245.12 is: 13,869.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,309.90 : 45,469.65 = 9,245.12 : x
  2. Step 2: Convert to fraction form
    30,309.90/45,469.65 = 9,245.12/x
  3. Step 3: Cross multiply
    30,309.90x = 45,469.65 × 9,245.12
  4. Step 4: Simplify right side
    30,309.90x = 420,372,143.26
  5. Step 5: Solve for x
    x = 420,372,143.26/30,309.90
  6. Step 6: Final answer
    x = 13,869.14

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1.5x scale

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.