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Finding the Fourth Proportional to 27,002.88, 40,435.20 and 20,090.88

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Solution

The fourth proportional to 27,002.88, 40,435.20 and 20,090.88 is: 30,084.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,002.88 : 40,435.20 = 20,090.88 : x
  2. Step 2: Convert to fraction form
    27,002.88/40,435.20 = 20,090.88/x
  3. Step 3: Cross multiply
    27,002.88x = 40,435.20 × 20,090.88
  4. Step 4: Simplify right side
    27,002.88x = 812,378,750.98
  5. Step 5: Solve for x
    x = 812,378,750.98/27,002.88
  6. Step 6: Final answer
    x = 30,084.89

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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.