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Finding the Fourth Proportional to 36,810.88, 55,210.56 and 12,186.88

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Solution

The fourth proportional to 36,810.88, 55,210.56 and 12,186.88 is: 18,278.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,810.88 : 55,210.56 = 12,186.88 : x
  2. Step 2: Convert to fraction form
    36,810.88/55,210.56 = 12,186.88/x
  3. Step 3: Cross multiply
    36,810.88x = 55,210.56 × 12,186.88
  4. Step 4: Simplify right side
    36,810.88x = 672,844,469.45
  5. Step 5: Solve for x
    x = 672,844,469.45/36,810.88
  6. Step 6: Final answer
    x = 18,278.41

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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.