Home / 21,330.63-31,999.59-9,488.61

Finding the Fourth Proportional to 21,330.63, 31,999.59 and 9,488.61

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Solution

The fourth proportional to 21,330.63, 31,999.59 and 9,488.61 is: 14,234.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,330.63 : 31,999.59 = 9,488.61 : x
  2. Step 2: Convert to fraction form
    21,330.63/31,999.59 = 9,488.61/x
  3. Step 3: Cross multiply
    21,330.63x = 31,999.59 × 9,488.61
  4. Step 4: Simplify right side
    21,330.63x = 303,631,629.67
  5. Step 5: Solve for x
    x = 303,631,629.67/21,330.63
  6. Step 6: Final answer
    x = 14,234.54

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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.