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Finding the Fourth Proportional to 27,957.40, 41,921.70 and 10,418.20

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Solution

The fourth proportional to 27,957.40, 41,921.70 and 10,418.20 is: 15,621.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,957.40 : 41,921.70 = 10,418.20 : x
  2. Step 2: Convert to fraction form
    27,957.40/41,921.70 = 10,418.20/x
  3. Step 3: Cross multiply
    27,957.40x = 41,921.70 × 10,418.20
  4. Step 4: Simplify right side
    27,957.40x = 436,748,654.94
  5. Step 5: Solve for x
    x = 436,748,654.94/27,957.40
  6. Step 6: Final answer
    x = 15,621.93

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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.