Home / 20,350.44-28,089.18-12,392.60

Finding the Fourth Proportional to 20,350.44, 28,089.18 and 12,392.60

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Solution

The fourth proportional to 20,350.44, 28,089.18 and 12,392.60 is: 17,105.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,350.44 : 28,089.18 = 12,392.60 : x
  2. Step 2: Convert to fraction form
    20,350.44/28,089.18 = 12,392.60/x
  3. Step 3: Cross multiply
    20,350.44x = 28,089.18 × 12,392.60
  4. Step 4: Simplify right side
    20,350.44x = 348,097,831.62
  5. Step 5: Solve for x
    x = 348,097,831.62/20,350.44
  6. Step 6: Final answer
    x = 17,105.17

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.