Home / 21,020.70-29,007.66-11,460.36

Finding the Fourth Proportional to 21,020.70, 29,007.66 and 11,460.36

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Solution

The fourth proportional to 21,020.70, 29,007.66 and 11,460.36 is: 15,814.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,020.70 : 29,007.66 = 11,460.36 : x
  2. Step 2: Convert to fraction form
    21,020.70/29,007.66 = 11,460.36/x
  3. Step 3: Cross multiply
    21,020.70x = 29,007.66 × 11,460.36
  4. Step 4: Simplify right side
    21,020.70x = 332,438,226.36
  5. Step 5: Solve for x
    x = 332,438,226.36/21,020.70
  6. Step 6: Final answer
    x = 15,814.80

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1.5x scale

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.