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Finding the Fourth Proportional to 18,298.05, 27,448.70 and 7,622.05

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Solution

The fourth proportional to 18,298.05, 27,448.70 and 7,622.05 is: 11,433.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,298.05 : 27,448.70 = 7,622.05 : x
  2. Step 2: Convert to fraction form
    18,298.05/27,448.70 = 7,622.05/x
  3. Step 3: Cross multiply
    18,298.05x = 27,448.70 × 7,622.05
  4. Step 4: Simplify right side
    18,298.05x = 209,215,363.84
  5. Step 5: Solve for x
    x = 209,215,363.84/18,298.05
  6. Step 6: Final answer
    x = 11,433.75

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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.