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Finding the Fourth Proportional to 36,687.20, 55,030.80 and 13,310.60

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Solution

The fourth proportional to 36,687.20, 55,030.80 and 13,310.60 is: 19,965.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,687.20 : 55,030.80 = 13,310.60 : x
  2. Step 2: Convert to fraction form
    36,687.20/55,030.80 = 13,310.60/x
  3. Step 3: Cross multiply
    36,687.20x = 55,030.80 × 13,310.60
  4. Step 4: Simplify right side
    36,687.20x = 732,492,966.48
  5. Step 5: Solve for x
    x = 732,492,966.48/36,687.20
  6. Step 6: Final answer
    x = 19,965.90

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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.