Home / 18,715.05-25,831.10-10,761.86

Finding the Fourth Proportional to 18,715.05, 25,831.10 and 10,761.86

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Solution

The fourth proportional to 18,715.05, 25,831.10 and 10,761.86 is: 14,853.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,715.05 : 25,831.10 = 10,761.86 : x
  2. Step 2: Convert to fraction form
    18,715.05/25,831.10 = 10,761.86/x
  3. Step 3: Cross multiply
    18,715.05x = 25,831.10 × 10,761.86
  4. Step 4: Simplify right side
    18,715.05x = 277,990,773.33
  5. Step 5: Solve for x
    x = 277,990,773.33/18,715.05
  6. Step 6: Final answer
    x = 14,853.86

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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.