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Finding the Fourth Proportional to 18,707.70, 28,066.13 and 6,227.70

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Solution

The fourth proportional to 18,707.70, 28,066.13 and 6,227.70 is: 9,343.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,707.70 : 28,066.13 = 6,227.70 : x
  2. Step 2: Convert to fraction form
    18,707.70/28,066.13 = 6,227.70/x
  3. Step 3: Cross multiply
    18,707.70x = 28,066.13 × 6,227.70
  4. Step 4: Simplify right side
    18,707.70x = 174,787,406.66
  5. Step 5: Solve for x
    x = 174,787,406.66/18,707.70
  6. Step 6: Final answer
    x = 9,343.07

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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.