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Finding the Fourth Proportional to 38,157.66, 52,656.62 and 21,161.66

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Solution

The fourth proportional to 38,157.66, 52,656.62 and 21,161.66 is: 29,202.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,157.66 : 52,656.62 = 21,161.66 : x
  2. Step 2: Convert to fraction form
    38,157.66/52,656.62 = 21,161.66/x
  3. Step 3: Cross multiply
    38,157.66x = 52,656.62 × 21,161.66
  4. Step 4: Simplify right side
    38,157.66x = 1,114,301,120.10
  5. Step 5: Solve for x
    x = 1,114,301,120.10/38,157.66
  6. Step 6: Final answer
    x = 29,202.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.