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Finding the Fourth Proportional to 18,213.70, 27,303.12 and 7,116.70

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Solution

The fourth proportional to 18,213.70, 27,303.12 and 7,116.70 is: 10,668.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,213.70 : 27,303.12 = 7,116.70 : x
  2. Step 2: Convert to fraction form
    18,213.70/27,303.12 = 7,116.70/x
  3. Step 3: Cross multiply
    18,213.70x = 27,303.12 × 7,116.70
  4. Step 4: Simplify right side
    18,213.70x = 194,308,114.10
  5. Step 5: Solve for x
    x = 194,308,114.10/18,213.70
  6. Step 6: Final answer
    x = 10,668.24

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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.