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Finding the Fourth Proportional to 27,259.10, 40,921.05 and 15,422.30

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Solution

The fourth proportional to 27,259.10, 40,921.05 and 15,422.30 is: 23,151.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,259.10 : 40,921.05 = 15,422.30 : x
  2. Step 2: Convert to fraction form
    27,259.10/40,921.05 = 15,422.30/x
  3. Step 3: Cross multiply
    27,259.10x = 40,921.05 × 15,422.30
  4. Step 4: Simplify right side
    27,259.10x = 631,096,709.42
  5. Step 5: Solve for x
    x = 631,096,709.42/27,259.10
  6. Step 6: Final answer
    x = 23,151.78

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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.