Home / 20,955.83-31,433.47-5,161.05

Finding the Fourth Proportional to 20,955.83, 31,433.47 and 5,161.05

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Solution

The fourth proportional to 20,955.83, 31,433.47 and 5,161.05 is: 7,741.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,955.83 : 31,433.47 = 5,161.05 : x
  2. Step 2: Convert to fraction form
    20,955.83/31,433.47 = 5,161.05/x
  3. Step 3: Cross multiply
    20,955.83x = 31,433.47 × 5,161.05
  4. Step 4: Simplify right side
    20,955.83x = 162,229,697.44
  5. Step 5: Solve for x
    x = 162,229,697.44/20,955.83
  6. Step 6: Final answer
    x = 7,741.51

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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.