Home / 21,270.97-31,906.45-5,688.19

Finding the Fourth Proportional to 21,270.97, 31,906.45 and 5,688.19

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Solution

The fourth proportional to 21,270.97, 31,906.45 and 5,688.19 is: 8,532.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,270.97 : 31,906.45 = 5,688.19 : x
  2. Step 2: Convert to fraction form
    21,270.97/31,906.45 = 5,688.19/x
  3. Step 3: Cross multiply
    21,270.97x = 31,906.45 × 5,688.19
  4. Step 4: Simplify right side
    21,270.97x = 181,489,949.83
  5. Step 5: Solve for x
    x = 181,489,949.83/21,270.97
  6. Step 6: Final answer
    x = 8,532.28

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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.