Home / 20,554.40-30,831.60-11,806.40

Finding the Fourth Proportional to 20,554.40, 30,831.60 and 11,806.40

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Solution

The fourth proportional to 20,554.40, 30,831.60 and 11,806.40 is: 17,709.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,554.40 : 30,831.60 = 11,806.40 : x
  2. Step 2: Convert to fraction form
    20,554.40/30,831.60 = 11,806.40/x
  3. Step 3: Cross multiply
    20,554.40x = 30,831.60 × 11,806.40
  4. Step 4: Simplify right side
    20,554.40x = 364,010,202.24
  5. Step 5: Solve for x
    x = 364,010,202.24/20,554.40
  6. Step 6: Final answer
    x = 17,709.60

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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.