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Finding the Fourth Proportional to 37,245.20, 55,867.80 and 12,289.10

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Solution

The fourth proportional to 37,245.20, 55,867.80 and 12,289.10 is: 18,433.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,245.20 : 55,867.80 = 12,289.10 : x
  2. Step 2: Convert to fraction form
    37,245.20/55,867.80 = 12,289.10/x
  3. Step 3: Cross multiply
    37,245.20x = 55,867.80 × 12,289.10
  4. Step 4: Simplify right side
    37,245.20x = 686,564,980.98
  5. Step 5: Solve for x
    x = 686,564,980.98/37,245.20
  6. Step 6: Final answer
    x = 18,433.65

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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.