Home / 21,831.08-32,751.46-11,965.28

Finding the Fourth Proportional to 21,831.08, 32,751.46 and 11,965.28

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Solution

The fourth proportional to 21,831.08, 32,751.46 and 11,965.28 is: 17,950.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,831.08 : 32,751.46 = 11,965.28 : x
  2. Step 2: Convert to fraction form
    21,831.08/32,751.46 = 11,965.28/x
  3. Step 3: Cross multiply
    21,831.08x = 32,751.46 × 11,965.28
  4. Step 4: Simplify right side
    21,831.08x = 391,880,389.31
  5. Step 5: Solve for x
    x = 391,880,389.31/21,831.08
  6. Step 6: Final answer
    x = 17,950.57

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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.