Home / 20,831.93-31,235.37-8,003.36

Finding the Fourth Proportional to 20,831.93, 31,235.37 and 8,003.36

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Solution

The fourth proportional to 20,831.93, 31,235.37 and 8,003.36 is: 12,000.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,831.93 : 31,235.37 = 8,003.36 : x
  2. Step 2: Convert to fraction form
    20,831.93/31,235.37 = 8,003.36/x
  3. Step 3: Cross multiply
    20,831.93x = 31,235.37 × 8,003.36
  4. Step 4: Simplify right side
    20,831.93x = 249,987,828.24
  5. Step 5: Solve for x
    x = 249,987,828.24/20,831.93
  6. Step 6: Final answer
    x = 12,000.22

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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.