Home / 20,305.68-28,018.44-11,353.36

Finding the Fourth Proportional to 20,305.68, 28,018.44 and 11,353.36

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Solution

The fourth proportional to 20,305.68, 28,018.44 and 11,353.36 is: 15,665.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,305.68 : 28,018.44 = 11,353.36 : x
  2. Step 2: Convert to fraction form
    20,305.68/28,018.44 = 11,353.36/x
  3. Step 3: Cross multiply
    20,305.68x = 28,018.44 × 11,353.36
  4. Step 4: Simplify right side
    20,305.68x = 318,103,435.96
  5. Step 5: Solve for x
    x = 318,103,435.96/20,305.68
  6. Step 6: Final answer
    x = 15,665.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.