Home / 20,554.14-30,831.20-18,949.12

Finding the Fourth Proportional to 20,554.14, 30,831.20 and 18,949.12

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Solution

The fourth proportional to 20,554.14, 30,831.20 and 18,949.12 is: 28,423.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,554.14 : 30,831.20 = 18,949.12 : x
  2. Step 2: Convert to fraction form
    20,554.14/30,831.20 = 18,949.12/x
  3. Step 3: Cross multiply
    20,554.14x = 30,831.20 × 18,949.12
  4. Step 4: Simplify right side
    20,554.14x = 584,224,108.54
  5. Step 5: Solve for x
    x = 584,224,108.54/20,554.14
  6. Step 6: Final answer
    x = 28,423.67

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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.