Home / 15,905.14-21,950.08-8,831.68

Finding the Fourth Proportional to 15,905.14, 21,950.08 and 8,831.68

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Solution

The fourth proportional to 15,905.14, 21,950.08 and 8,831.68 is: 12,188.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,905.14 : 21,950.08 = 8,831.68 : x
  2. Step 2: Convert to fraction form
    15,905.14/21,950.08 = 8,831.68/x
  3. Step 3: Cross multiply
    15,905.14x = 21,950.08 × 8,831.68
  4. Step 4: Simplify right side
    15,905.14x = 193,856,082.53
  5. Step 5: Solve for x
    x = 193,856,082.53/15,905.14
  6. Step 6: Final answer
    x = 12,188.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.