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Finding the Fourth Proportional to 18,253.40, 27,380.33 and 6,406.70

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Solution

The fourth proportional to 18,253.40, 27,380.33 and 6,406.70 is: 9,610.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,253.40 : 27,380.33 = 6,406.70 : x
  2. Step 2: Convert to fraction form
    18,253.40/27,380.33 = 6,406.70/x
  3. Step 3: Cross multiply
    18,253.40x = 27,380.33 × 6,406.70
  4. Step 4: Simplify right side
    18,253.40x = 175,417,415.30
  5. Step 5: Solve for x
    x = 175,417,415.30/18,253.40
  6. Step 6: Final answer
    x = 9,610.12

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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.