Home / 13,831.80-20,723.40-11,353.20

Finding the Fourth Proportional to 13,831.80, 20,723.40 and 11,353.20

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Solution

The fourth proportional to 13,831.80, 20,723.40 and 11,353.20 is: 17,009.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,831.80 : 20,723.40 = 11,353.20 : x
  2. Step 2: Convert to fraction form
    13,831.80/20,723.40 = 11,353.20/x
  3. Step 3: Cross multiply
    13,831.80x = 20,723.40 × 11,353.20
  4. Step 4: Simplify right side
    13,831.80x = 235,276,904.88
  5. Step 5: Solve for x
    x = 235,276,904.88/13,831.80
  6. Step 6: Final answer
    x = 17,009.85

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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.