Home / 21,233.16-31,827.78-7,188.54

Finding the Fourth Proportional to 21,233.16, 31,827.78 and 7,188.54

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Solution

The fourth proportional to 21,233.16, 31,827.78 and 7,188.54 is: 10,775.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,233.16 : 31,827.78 = 7,188.54 : x
  2. Step 2: Convert to fraction form
    21,233.16/31,827.78 = 7,188.54/x
  3. Step 3: Cross multiply
    21,233.16x = 31,827.78 × 7,188.54
  4. Step 4: Simplify right side
    21,233.16x = 228,795,269.64
  5. Step 5: Solve for x
    x = 228,795,269.64/21,233.16
  6. Step 6: Final answer
    x = 10,775.38

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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.