Home / 21,831.09-32,748.74-8,680.53

Finding the Fourth Proportional to 21,831.09, 32,748.74 and 8,680.53

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Solution

The fourth proportional to 21,831.09, 32,748.74 and 8,680.53 is: 13,021.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,831.09 : 32,748.74 = 8,680.53 : x
  2. Step 2: Convert to fraction form
    21,831.09/32,748.74 = 8,680.53/x
  3. Step 3: Cross multiply
    21,831.09x = 32,748.74 × 8,680.53
  4. Step 4: Simplify right side
    21,831.09x = 284,276,376.63
  5. Step 5: Solve for x
    x = 284,276,376.63/21,831.09
  6. Step 6: Final answer
    x = 13,021.63

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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.