Home / 30,213.21-45,319.83-9,153.03

Finding the Fourth Proportional to 30,213.21, 45,319.83 and 9,153.03

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Solution

The fourth proportional to 30,213.21, 45,319.83 and 9,153.03 is: 13,729.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,213.21 : 45,319.83 = 9,153.03 : x
  2. Step 2: Convert to fraction form
    30,213.21/45,319.83 = 9,153.03/x
  3. Step 3: Cross multiply
    30,213.21x = 45,319.83 × 9,153.03
  4. Step 4: Simplify right side
    30,213.21x = 414,813,763.58
  5. Step 5: Solve for x
    x = 414,813,763.58/30,213.21
  6. Step 6: Final answer
    x = 13,729.55

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Similar ratio
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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.