Home / 30,631.60-45,947.40-12,163.60

Finding the Fourth Proportional to 30,631.60, 45,947.40 and 12,163.60

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Solution

The fourth proportional to 30,631.60, 45,947.40 and 12,163.60 is: 18,245.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,631.60 : 45,947.40 = 12,163.60 : x
  2. Step 2: Convert to fraction form
    30,631.60/45,947.40 = 12,163.60/x
  3. Step 3: Cross multiply
    30,631.60x = 45,947.40 × 12,163.60
  4. Step 4: Simplify right side
    30,631.60x = 558,885,794.64
  5. Step 5: Solve for x
    x = 558,885,794.64/30,631.60
  6. Step 6: Final answer
    x = 18,245.40

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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.