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Finding the Fourth Proportional to 36,388.60, 54,549.90 and 13,009.60

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Solution

The fourth proportional to 36,388.60, 54,549.90 and 13,009.60 is: 19,502.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,388.60 : 54,549.90 = 13,009.60 : x
  2. Step 2: Convert to fraction form
    36,388.60/54,549.90 = 13,009.60/x
  3. Step 3: Cross multiply
    36,388.60x = 54,549.90 × 13,009.60
  4. Step 4: Simplify right side
    36,388.60x = 709,672,379.04
  5. Step 5: Solve for x
    x = 709,672,379.04/36,388.60
  6. Step 6: Final answer
    x = 19,502.60

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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.