Home / 20,559.20-30,831.60-10,695.20

Finding the Fourth Proportional to 20,559.20, 30,831.60 and 10,695.20

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Solution

The fourth proportional to 20,559.20, 30,831.60 and 10,695.20 is: 16,039.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,559.20 : 30,831.60 = 10,695.20 : x
  2. Step 2: Convert to fraction form
    20,559.20/30,831.60 = 10,695.20/x
  3. Step 3: Cross multiply
    20,559.20x = 30,831.60 × 10,695.20
  4. Step 4: Simplify right side
    20,559.20x = 329,750,128.32
  5. Step 5: Solve for x
    x = 329,750,128.32/20,559.20
  6. Step 6: Final answer
    x = 16,039.05

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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.