Home / 20,775.47-31,163.32-5,984.74

Finding the Fourth Proportional to 20,775.47, 31,163.32 and 5,984.74

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Solution

The fourth proportional to 20,775.47, 31,163.32 and 5,984.74 is: 8,977.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,775.47 : 31,163.32 = 5,984.74 : x
  2. Step 2: Convert to fraction form
    20,775.47/31,163.32 = 5,984.74/x
  3. Step 3: Cross multiply
    20,775.47x = 31,163.32 × 5,984.74
  4. Step 4: Simplify right side
    20,775.47x = 186,504,380.51
  5. Step 5: Solve for x
    x = 186,504,380.51/20,775.47
  6. Step 6: Final answer
    x = 8,977.14

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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.