Home / 20,775.05-28,671.96-11,700.48

Finding the Fourth Proportional to 20,775.05, 28,671.96 and 11,700.48

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Solution

The fourth proportional to 20,775.05, 28,671.96 and 11,700.48 is: 16,148.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,775.05 : 28,671.96 = 11,700.48 : x
  2. Step 2: Convert to fraction form
    20,775.05/28,671.96 = 11,700.48/x
  3. Step 3: Cross multiply
    20,775.05x = 28,671.96 × 11,700.48
  4. Step 4: Simplify right side
    20,775.05x = 335,475,694.54
  5. Step 5: Solve for x
    x = 335,475,694.54/20,775.05
  6. Step 6: Final answer
    x = 16,148.01

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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.