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Finding the Fourth Proportional to 38,146.15, 52,641.43 and 21,150.40

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Solution

The fourth proportional to 38,146.15, 52,641.43 and 21,150.40 is: 29,187.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,146.15 : 52,641.43 = 21,150.40 : x
  2. Step 2: Convert to fraction form
    38,146.15/52,641.43 = 21,150.40/x
  3. Step 3: Cross multiply
    38,146.15x = 52,641.43 × 21,150.40
  4. Step 4: Simplify right side
    38,146.15x = 1,113,387,526.60
  5. Step 5: Solve for x
    x = 1,113,387,526.60/38,146.15
  6. Step 6: Final answer
    x = 29,187.41

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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.