Home / 20,845.37-31,268.51-7,519.43

Finding the Fourth Proportional to 20,845.37, 31,268.51 and 7,519.43

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Solution

The fourth proportional to 20,845.37, 31,268.51 and 7,519.43 is: 11,279.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,845.37 : 31,268.51 = 7,519.43 : x
  2. Step 2: Convert to fraction form
    20,845.37/31,268.51 = 7,519.43/x
  3. Step 3: Cross multiply
    20,845.37x = 31,268.51 × 7,519.43
  4. Step 4: Simplify right side
    20,845.37x = 235,121,312.78
  5. Step 5: Solve for x
    x = 235,121,312.78/20,845.37
  6. Step 6: Final answer
    x = 11,279.31

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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.