Home / 20,407.09-30,610.79-5,616.82

Finding the Fourth Proportional to 20,407.09, 30,610.79 and 5,616.82

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Solution

The fourth proportional to 20,407.09, 30,610.79 and 5,616.82 is: 8,425.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,407.09 : 30,610.79 = 5,616.82 : x
  2. Step 2: Convert to fraction form
    20,407.09/30,610.79 = 5,616.82/x
  3. Step 3: Cross multiply
    20,407.09x = 30,610.79 × 5,616.82
  4. Step 4: Simplify right side
    20,407.09x = 171,935,269.40
  5. Step 5: Solve for x
    x = 171,935,269.40/20,407.09
  6. Step 6: Final answer
    x = 8,425.27

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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.