Home / 21,030.15-29,021.22-11,470.11

Finding the Fourth Proportional to 21,030.15, 29,021.22 and 11,470.11

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Solution

The fourth proportional to 21,030.15, 29,021.22 and 11,470.11 is: 15,828.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,030.15 : 29,021.22 = 11,470.11 : x
  2. Step 2: Convert to fraction form
    21,030.15/29,021.22 = 11,470.11/x
  3. Step 3: Cross multiply
    21,030.15x = 29,021.22 × 11,470.11
  4. Step 4: Simplify right side
    21,030.15x = 332,876,585.73
  5. Step 5: Solve for x
    x = 332,876,585.73/21,030.15
  6. Step 6: Final answer
    x = 15,828.54

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.