Home / 21,063.36-31,595.78-6,831.52

Finding the Fourth Proportional to 21,063.36, 31,595.78 and 6,831.52

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Solution

The fourth proportional to 21,063.36, 31,595.78 and 6,831.52 is: 10,247.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,063.36 : 31,595.78 = 6,831.52 : x
  2. Step 2: Convert to fraction form
    21,063.36/31,595.78 = 6,831.52/x
  3. Step 3: Cross multiply
    21,063.36x = 31,595.78 × 6,831.52
  4. Step 4: Simplify right side
    21,063.36x = 215,847,202.99
  5. Step 5: Solve for x
    x = 215,847,202.99/21,063.36
  6. Step 6: Final answer
    x = 10,247.52

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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.