Home / 27,142.32-40,653.32-20,856.06

Finding the Fourth Proportional to 27,142.32, 40,653.32 and 20,856.06

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Solution

The fourth proportional to 27,142.32, 40,653.32 and 20,856.06 is: 31,237.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,142.32 : 40,653.32 = 20,856.06 : x
  2. Step 2: Convert to fraction form
    27,142.32/40,653.32 = 20,856.06/x
  3. Step 3: Cross multiply
    27,142.32x = 40,653.32 × 20,856.06
  4. Step 4: Simplify right side
    27,142.32x = 847,867,877.85
  5. Step 5: Solve for x
    x = 847,867,877.85/27,142.32
  6. Step 6: Final answer
    x = 31,237.86

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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.