Home / 18,831.12-25,979.54-10,871.81

Finding the Fourth Proportional to 18,831.12, 25,979.54 and 10,871.81

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Solution

The fourth proportional to 18,831.12, 25,979.54 and 10,871.81 is: 14,998.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,831.12 : 25,979.54 = 10,871.81 : x
  2. Step 2: Convert to fraction form
    18,831.12/25,979.54 = 10,871.81/x
  3. Step 3: Cross multiply
    18,831.12x = 25,979.54 × 10,871.81
  4. Step 4: Simplify right side
    18,831.12x = 282,444,438.51
  5. Step 5: Solve for x
    x = 282,444,438.51/18,831.12
  6. Step 6: Final answer
    x = 14,998.81

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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.