Home / 28,831.14-43,154.37-20,906.10

Finding the Fourth Proportional to 28,831.14, 43,154.37 and 20,906.10

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Solution

The fourth proportional to 28,831.14, 43,154.37 and 20,906.10 is: 31,292.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,831.14 : 43,154.37 = 20,906.10 : x
  2. Step 2: Convert to fraction form
    28,831.14/43,154.37 = 20,906.10/x
  3. Step 3: Cross multiply
    28,831.14x = 43,154.37 × 20,906.10
  4. Step 4: Simplify right side
    28,831.14x = 902,189,574.66
  5. Step 5: Solve for x
    x = 902,189,574.66/28,831.14
  6. Step 6: Final answer
    x = 31,292.19

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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.