Home / 21,022-29,010.56-11,590.90

Finding the Fourth Proportional to 21,022, 29,010.56 and 11,590.90

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Solution

The fourth proportional to 21,022, 29,010.56 and 11,590.90 is: 15,995.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,022 : 29,010.56 = 11,590.90 : x
  2. Step 2: Convert to fraction form
    21,022/29,010.56 = 11,590.90/x
  3. Step 3: Cross multiply
    21,022x = 29,010.56 × 11,590.90
  4. Step 4: Simplify right side
    21,022x = 336,258,499.90
  5. Step 5: Solve for x
    x = 336,258,499.90/21,022
  6. Step 6: Final answer
    x = 15,995.55

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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.