Home / 21,239.16-31,831.50-8,767.94

Finding the Fourth Proportional to 21,239.16, 31,831.50 and 8,767.94

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Solution

The fourth proportional to 21,239.16, 31,831.50 and 8,767.94 is: 13,140.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,239.16 : 31,831.50 = 8,767.94 : x
  2. Step 2: Convert to fraction form
    21,239.16/31,831.50 = 8,767.94/x
  3. Step 3: Cross multiply
    21,239.16x = 31,831.50 × 8,767.94
  4. Step 4: Simplify right side
    21,239.16x = 279,096,522.95
  5. Step 5: Solve for x
    x = 279,096,522.95/21,239.16
  6. Step 6: Final answer
    x = 13,140.66

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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.