Home / 15,905.44-21,950.04-8,831.20

Finding the Fourth Proportional to 15,905.44, 21,950.04 and 8,831.20

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Solution

The fourth proportional to 15,905.44, 21,950.04 and 8,831.20 is: 12,187.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,905.44 : 21,950.04 = 8,831.20 : x
  2. Step 2: Convert to fraction form
    15,905.44/21,950.04 = 8,831.20/x
  3. Step 3: Cross multiply
    15,905.44x = 21,950.04 × 8,831.20
  4. Step 4: Simplify right side
    15,905.44x = 193,845,193.25
  5. Step 5: Solve for x
    x = 193,845,193.25/15,905.44
  6. Step 6: Final answer
    x = 12,187.35

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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.