Home / 20,874.64-31,313.40-7,726.72

Finding the Fourth Proportional to 20,874.64, 31,313.40 and 7,726.72

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Solution

The fourth proportional to 20,874.64, 31,313.40 and 7,726.72 is: 11,590.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,874.64 : 31,313.40 = 7,726.72 : x
  2. Step 2: Convert to fraction form
    20,874.64/31,313.40 = 7,726.72/x
  3. Step 3: Cross multiply
    20,874.64x = 31,313.40 × 7,726.72
  4. Step 4: Simplify right side
    20,874.64x = 241,949,874.05
  5. Step 5: Solve for x
    x = 241,949,874.05/20,874.64
  6. Step 6: Final answer
    x = 11,590.61

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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.