Home / 21,098.14-29,115.21-11,666.68

Finding the Fourth Proportional to 21,098.14, 29,115.21 and 11,666.68

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Solution

The fourth proportional to 21,098.14, 29,115.21 and 11,666.68 is: 16,099.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,098.14 : 29,115.21 = 11,666.68 : x
  2. Step 2: Convert to fraction form
    21,098.14/29,115.21 = 11,666.68/x
  3. Step 3: Cross multiply
    21,098.14x = 29,115.21 × 11,666.68
  4. Step 4: Simplify right side
    21,098.14x = 339,677,838.20
  5. Step 5: Solve for x
    x = 339,677,838.20/21,098.14
  6. Step 6: Final answer
    x = 16,099.89

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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.