Home / 20,831.23-28,746.97-19,136.75

Finding the Fourth Proportional to 20,831.23, 28,746.97 and 19,136.75

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Solution

The fourth proportional to 20,831.23, 28,746.97 and 19,136.75 is: 26,408.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,831.23 : 28,746.97 = 19,136.75 : x
  2. Step 2: Convert to fraction form
    20,831.23/28,746.97 = 19,136.75/x
  3. Step 3: Cross multiply
    20,831.23x = 28,746.97 × 19,136.75
  4. Step 4: Simplify right side
    20,831.23x = 550,123,578.15
  5. Step 5: Solve for x
    x = 550,123,578.15/20,831.23
  6. Step 6: Final answer
    x = 26,408.60

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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.