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Finding the Fourth Proportional to 21,590.91, 32,395.75 and 7,561.00

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Solution

The fourth proportional to 21,590.91, 32,395.75 and 7,561.00 is: 11,344.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,590.91 : 32,395.75 = 7,561.00 : x
  2. Step 2: Convert to fraction form
    21,590.91/32,395.75 = 7,561.00/x
  3. Step 3: Cross multiply
    21,590.91x = 32,395.75 × 7,561.00
  4. Step 4: Simplify right side
    21,590.91x = 244,944,287.34
  5. Step 5: Solve for x
    x = 244,944,287.34/21,590.91
  6. Step 6: Final answer
    x = 11,344.79

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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.