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Finding the Fourth Proportional to 27,665.92, 38,167.69 and 19,287.28

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Solution

The fourth proportional to 27,665.92, 38,167.69 and 19,287.28 is: 26,608.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,665.92 : 38,167.69 = 19,287.28 : x
  2. Step 2: Convert to fraction form
    27,665.92/38,167.69 = 19,287.28/x
  3. Step 3: Cross multiply
    27,665.92x = 38,167.69 × 19,287.28
  4. Step 4: Simplify right side
    27,665.92x = 736,150,636.71
  5. Step 5: Solve for x
    x = 736,150,636.71/27,665.92
  6. Step 6: Final answer
    x = 26,608.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.