Home / 21,220.16-31,827.36-5,636.48

Finding the Fourth Proportional to 21,220.16, 31,827.36 and 5,636.48

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Solution

The fourth proportional to 21,220.16, 31,827.36 and 5,636.48 is: 8,453.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,220.16 : 31,827.36 = 5,636.48 : x
  2. Step 2: Convert to fraction form
    21,220.16/31,827.36 = 5,636.48/x
  3. Step 3: Cross multiply
    21,220.16x = 31,827.36 × 5,636.48
  4. Step 4: Simplify right side
    21,220.16x = 179,394,278.09
  5. Step 5: Solve for x
    x = 179,394,278.09/21,220.16
  6. Step 6: Final answer
    x = 8,453.96

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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.