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Finding the Fourth Proportional to 18,391.69, 27,587.79 and 5,244.06

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Solution

The fourth proportional to 18,391.69, 27,587.79 and 5,244.06 is: 7,866.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,391.69 : 27,587.79 = 5,244.06 : x
  2. Step 2: Convert to fraction form
    18,391.69/27,587.79 = 5,244.06/x
  3. Step 3: Cross multiply
    18,391.69x = 27,587.79 × 5,244.06
  4. Step 4: Simplify right side
    18,391.69x = 144,672,149.15
  5. Step 5: Solve for x
    x = 144,672,149.15/18,391.69
  6. Step 6: Final answer
    x = 7,866.17

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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.