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Finding the Fourth Proportional to 36,812.40, 55,218.60 and 12,188.40

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Solution

The fourth proportional to 36,812.40, 55,218.60 and 12,188.40 is: 18,282.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,812.40 : 55,218.60 = 12,188.40 : x
  2. Step 2: Convert to fraction form
    36,812.40/55,218.60 = 12,188.40/x
  3. Step 3: Cross multiply
    36,812.40x = 55,218.60 × 12,188.40
  4. Step 4: Simplify right side
    36,812.40x = 673,026,384.24
  5. Step 5: Solve for x
    x = 673,026,384.24/36,812.40
  6. Step 6: Final answer
    x = 18,282.60

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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.