Home / 21,295.28-31,921.44-8,822.12

Finding the Fourth Proportional to 21,295.28, 31,921.44 and 8,822.12

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Solution

The fourth proportional to 21,295.28, 31,921.44 and 8,822.12 is: 13,224.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,295.28 : 31,921.44 = 8,822.12 : x
  2. Step 2: Convert to fraction form
    21,295.28/31,921.44 = 8,822.12/x
  3. Step 3: Cross multiply
    21,295.28x = 31,921.44 × 8,822.12
  4. Step 4: Simplify right side
    21,295.28x = 281,614,774.25
  5. Step 5: Solve for x
    x = 281,614,774.25/21,295.28
  6. Step 6: Final answer
    x = 13,224.28

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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.