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Finding the Fourth Proportional to 18,073.19, 27,105.42 and 6,972.80

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Solution

The fourth proportional to 18,073.19, 27,105.42 and 6,972.80 is: 10,457.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,073.19 : 27,105.42 = 6,972.80 : x
  2. Step 2: Convert to fraction form
    18,073.19/27,105.42 = 6,972.80/x
  3. Step 3: Cross multiply
    18,073.19x = 27,105.42 × 6,972.80
  4. Step 4: Simplify right side
    18,073.19x = 189,000,681.29
  5. Step 5: Solve for x
    x = 189,000,681.29/18,073.19
  6. Step 6: Final answer
    x = 10,457.52

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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.