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Finding the Fourth Proportional to 21,710.99, 32,566.48 and 6,128.61

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Solution

The fourth proportional to 21,710.99, 32,566.48 and 6,128.61 is: 9,192.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,710.99 : 32,566.48 = 6,128.61 : x
  2. Step 2: Convert to fraction form
    21,710.99/32,566.48 = 6,128.61/x
  3. Step 3: Cross multiply
    21,710.99x = 32,566.48 × 6,128.61
  4. Step 4: Simplify right side
    21,710.99x = 199,587,239.67
  5. Step 5: Solve for x
    x = 199,587,239.67/21,710.99
  6. Step 6: Final answer
    x = 9,192.92

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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.