Home / 13,831.56-20,736.70-7,160.91

Finding the Fourth Proportional to 13,831.56, 20,736.70 and 7,160.91

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Solution

The fourth proportional to 13,831.56, 20,736.70 and 7,160.91 is: 10,735.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,831.56 : 20,736.70 = 7,160.91 : x
  2. Step 2: Convert to fraction form
    13,831.56/20,736.70 = 7,160.91/x
  3. Step 3: Cross multiply
    13,831.56x = 20,736.70 × 7,160.91
  4. Step 4: Simplify right side
    13,831.56x = 148,493,642.40
  5. Step 5: Solve for x
    x = 148,493,642.40/13,831.56
  6. Step 6: Final answer
    x = 10,735.86

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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.