Home / 27,776.43-38,321.91-15,831.12

Finding the Fourth Proportional to 27,776.43, 38,321.91 and 15,831.12

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Solution

The fourth proportional to 27,776.43, 38,321.91 and 15,831.12 is: 21,841.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,776.43 : 38,321.91 = 15,831.12 : x
  2. Step 2: Convert to fraction form
    27,776.43/38,321.91 = 15,831.12/x
  3. Step 3: Cross multiply
    27,776.43x = 38,321.91 × 15,831.12
  4. Step 4: Simplify right side
    27,776.43x = 606,678,755.84
  5. Step 5: Solve for x
    x = 606,678,755.84/27,776.43
  6. Step 6: Final answer
    x = 21,841.49

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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.