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Finding the Fourth Proportional to 18,286.39, 27,430.53 and 5,807.39

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Solution

The fourth proportional to 18,286.39, 27,430.53 and 5,807.39 is: 8,711.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,286.39 : 27,430.53 = 5,807.39 : x
  2. Step 2: Convert to fraction form
    18,286.39/27,430.53 = 5,807.39/x
  3. Step 3: Cross multiply
    18,286.39x = 27,430.53 × 5,807.39
  4. Step 4: Simplify right side
    18,286.39x = 159,299,619.43
  5. Step 5: Solve for x
    x = 159,299,619.43/18,286.39
  6. Step 6: Final answer
    x = 8,711.38

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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.