Home / 21,313.43-31,970.14-5,731.05

Finding the Fourth Proportional to 21,313.43, 31,970.14 and 5,731.05

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Solution

The fourth proportional to 21,313.43, 31,970.14 and 5,731.05 is: 8,596.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,313.43 : 31,970.14 = 5,731.05 : x
  2. Step 2: Convert to fraction form
    21,313.43/31,970.14 = 5,731.05/x
  3. Step 3: Cross multiply
    21,313.43x = 31,970.14 × 5,731.05
  4. Step 4: Simplify right side
    21,313.43x = 183,222,608.64
  5. Step 5: Solve for x
    x = 183,222,608.64/21,313.43
  6. Step 6: Final answer
    x = 8,596.58

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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.