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Finding the Fourth Proportional to 27,012.30, 40,542.45 and 15,905.10

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Solution

The fourth proportional to 27,012.30, 40,542.45 and 15,905.10 is: 23,871.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,012.30 : 40,542.45 = 15,905.10 : x
  2. Step 2: Convert to fraction form
    27,012.30/40,542.45 = 15,905.10/x
  3. Step 3: Cross multiply
    27,012.30x = 40,542.45 × 15,905.10
  4. Step 4: Simplify right side
    27,012.30x = 644,831,721.50
  5. Step 5: Solve for x
    x = 644,831,721.50/27,012.30
  6. Step 6: Final answer
    x = 23,871.78

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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.