Home / 21,021.36-29,010.24-11,590.80

Finding the Fourth Proportional to 21,021.36, 29,010.24 and 11,590.80

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Solution

The fourth proportional to 21,021.36, 29,010.24 and 11,590.80 is: 15,995.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,021.36 : 29,010.24 = 11,590.80 : x
  2. Step 2: Convert to fraction form
    21,021.36/29,010.24 = 11,590.80/x
  3. Step 3: Cross multiply
    21,021.36x = 29,010.24 × 11,590.80
  4. Step 4: Simplify right side
    21,021.36x = 336,251,889.79
  5. Step 5: Solve for x
    x = 336,251,889.79/21,021.36
  6. Step 6: Final answer
    x = 15,995.72

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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.