Home / 20,850.38-31,275.64-5,055.35

Finding the Fourth Proportional to 20,850.38, 31,275.64 and 5,055.35

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Solution

The fourth proportional to 20,850.38, 31,275.64 and 5,055.35 is: 7,583.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,850.38 : 31,275.64 = 5,055.35 : x
  2. Step 2: Convert to fraction form
    20,850.38/31,275.64 = 5,055.35/x
  3. Step 3: Cross multiply
    20,850.38x = 31,275.64 × 5,055.35
  4. Step 4: Simplify right side
    20,850.38x = 158,109,137.66
  5. Step 5: Solve for x
    x = 158,109,137.66/20,850.38
  6. Step 6: Final answer
    x = 7,583.03

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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.