Home / 18,719.10-25,831.71-10,761.21

Finding the Fourth Proportional to 18,719.10, 25,831.71 and 10,761.21

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Solution

The fourth proportional to 18,719.10, 25,831.71 and 10,761.21 is: 14,850.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,719.10 : 25,831.71 = 10,761.21 : x
  2. Step 2: Convert to fraction form
    18,719.10/25,831.71 = 10,761.21/x
  3. Step 3: Cross multiply
    18,719.10x = 25,831.71 × 10,761.21
  4. Step 4: Simplify right side
    18,719.10x = 277,980,455.97
  5. Step 5: Solve for x
    x = 277,980,455.97/18,719.10
  6. Step 6: Final answer
    x = 14,850.10

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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.