Home / 20,228.56-30,331.32-9,827.28

Finding the Fourth Proportional to 20,228.56, 30,331.32 and 9,827.28

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Solution

The fourth proportional to 20,228.56, 30,331.32 and 9,827.28 is: 14,735.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,228.56 : 30,331.32 = 9,827.28 : x
  2. Step 2: Convert to fraction form
    20,228.56/30,331.32 = 9,827.28/x
  3. Step 3: Cross multiply
    20,228.56x = 30,331.32 × 9,827.28
  4. Step 4: Simplify right side
    20,228.56x = 298,074,374.41
  5. Step 5: Solve for x
    x = 298,074,374.41/20,228.56
  6. Step 6: Final answer
    x = 14,735.32

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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.