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Finding the Fourth Proportional to 38,160, 57,241.08 and 10,458

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Solution

The fourth proportional to 38,160, 57,241.08 and 10,458 is: 15,687.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,160 : 57,241.08 = 10,458 : x
  2. Step 2: Convert to fraction form
    38,160/57,241.08 = 10,458/x
  3. Step 3: Cross multiply
    38,160x = 57,241.08 × 10,458
  4. Step 4: Simplify right side
    38,160x = 598,627,214.64
  5. Step 5: Solve for x
    x = 598,627,214.64/38,160
  6. Step 6: Final answer
    x = 15,687.30

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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.