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Finding the Fourth Proportional to 18,713.66, 28,062.28 and 7,018.68

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Solution

The fourth proportional to 18,713.66, 28,062.28 and 7,018.68 is: 10,524.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,713.66 : 28,062.28 = 7,018.68 : x
  2. Step 2: Convert to fraction form
    18,713.66/28,062.28 = 7,018.68/x
  3. Step 3: Cross multiply
    18,713.66x = 28,062.28 × 7,018.68
  4. Step 4: Simplify right side
    18,713.66x = 196,960,128.30
  5. Step 5: Solve for x
    x = 196,960,128.30/18,713.66
  6. Step 6: Final answer
    x = 10,524.94

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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.