Home / 20,670.85-31,006.27-5,088.48

Finding the Fourth Proportional to 20,670.85, 31,006.27 and 5,088.48

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Solution

The fourth proportional to 20,670.85, 31,006.27 and 5,088.48 is: 7,632.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,670.85 : 31,006.27 = 5,088.48 : x
  2. Step 2: Convert to fraction form
    20,670.85/31,006.27 = 5,088.48/x
  3. Step 3: Cross multiply
    20,670.85x = 31,006.27 × 5,088.48
  4. Step 4: Simplify right side
    20,670.85x = 157,774,604.30
  5. Step 5: Solve for x
    x = 157,774,604.30/20,670.85
  6. Step 6: Final answer
    x = 7,632.71

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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.