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Finding the Fourth Proportional to 18,063.40, 27,116.70 and 10,172.20

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Solution

The fourth proportional to 18,063.40, 27,116.70 and 10,172.20 is: 15,270.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,063.40 : 27,116.70 = 10,172.20 : x
  2. Step 2: Convert to fraction form
    18,063.40/27,116.70 = 10,172.20/x
  3. Step 3: Cross multiply
    18,063.40x = 27,116.70 × 10,172.20
  4. Step 4: Simplify right side
    18,063.40x = 275,836,495.74
  5. Step 5: Solve for x
    x = 275,836,495.74/18,063.40
  6. Step 6: Final answer
    x = 15,270.46

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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.