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Finding the Fourth Proportional to 36,646.56, 54,969.84 and 21,054.24

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Solution

The fourth proportional to 36,646.56, 54,969.84 and 21,054.24 is: 31,581.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,646.56 : 54,969.84 = 21,054.24 : x
  2. Step 2: Convert to fraction form
    36,646.56/54,969.84 = 21,054.24/x
  3. Step 3: Cross multiply
    36,646.56x = 54,969.84 × 21,054.24
  4. Step 4: Simplify right side
    36,646.56x = 1,157,348,204.12
  5. Step 5: Solve for x
    x = 1,157,348,204.12/36,646.56
  6. Step 6: Final answer
    x = 31,581.36

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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.