Home / 13,831.35-20,716.55-11,432.19

Finding the Fourth Proportional to 13,831.35, 20,716.55 and 11,432.19

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Solution

The fourth proportional to 13,831.35, 20,716.55 and 11,432.19 is: 17,123.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,831.35 : 20,716.55 = 11,432.19 : x
  2. Step 2: Convert to fraction form
    13,831.35/20,716.55 = 11,432.19/x
  3. Step 3: Cross multiply
    13,831.35x = 20,716.55 × 11,432.19
  4. Step 4: Simplify right side
    13,831.35x = 236,835,478.58
  5. Step 5: Solve for x
    x = 236,835,478.58/13,831.35
  6. Step 6: Final answer
    x = 17,123.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.