Home / 14,103.28-21,156.32-5,220.98

Finding the Fourth Proportional to 14,103.28, 21,156.32 and 5,220.98

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Solution

The fourth proportional to 14,103.28, 21,156.32 and 5,220.98 is: 7,831.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,103.28 : 21,156.32 = 5,220.98 : x
  2. Step 2: Convert to fraction form
    14,103.28/21,156.32 = 5,220.98/x
  3. Step 3: Cross multiply
    14,103.28x = 21,156.32 × 5,220.98
  4. Step 4: Simplify right side
    14,103.28x = 110,456,789.54
  5. Step 5: Solve for x
    x = 110,456,789.54/14,103.28
  6. Step 6: Final answer
    x = 7,831.99

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1.5x scale

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.