Home / 27,769.14-38,318.63-15,831.81

Finding the Fourth Proportional to 27,769.14, 38,318.63 and 15,831.81

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Solution

The fourth proportional to 27,769.14, 38,318.63 and 15,831.81 is: 21,846.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,769.14 : 38,318.63 = 15,831.81 : x
  2. Step 2: Convert to fraction form
    27,769.14/38,318.63 = 15,831.81/x
  3. Step 3: Cross multiply
    27,769.14x = 38,318.63 × 15,831.81
  4. Step 4: Simplify right side
    27,769.14x = 606,653,190.46
  5. Step 5: Solve for x
    x = 606,653,190.46/27,769.14
  6. Step 6: Final answer
    x = 21,846.31

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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.