Home / 20,798.91-31,208.49-9,110.61

Finding the Fourth Proportional to 20,798.91, 31,208.49 and 9,110.61

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Solution

The fourth proportional to 20,798.91, 31,208.49 and 9,110.61 is: 13,670.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,798.91 : 31,208.49 = 9,110.61 : x
  2. Step 2: Convert to fraction form
    20,798.91/31,208.49 = 9,110.61/x
  3. Step 3: Cross multiply
    20,798.91x = 31,208.49 × 9,110.61
  4. Step 4: Simplify right side
    20,798.91x = 284,328,381.08
  5. Step 5: Solve for x
    x = 284,328,381.08/20,798.91
  6. Step 6: Final answer
    x = 13,670.35

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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.