Home / 21,089.18-29,104.71-11,658.62

Finding the Fourth Proportional to 21,089.18, 29,104.71 and 11,658.62

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Solution

The fourth proportional to 21,089.18, 29,104.71 and 11,658.62 is: 16,089.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,089.18 : 29,104.71 = 11,658.62 : x
  2. Step 2: Convert to fraction form
    21,089.18/29,104.71 = 11,658.62/x
  3. Step 3: Cross multiply
    21,089.18x = 29,104.71 × 11,658.62
  4. Step 4: Simplify right side
    21,089.18x = 339,320,754.10
  5. Step 5: Solve for x
    x = 339,320,754.10/21,089.18
  6. Step 6: Final answer
    x = 16,089.80

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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.