Home / 21,097.64-29,115.32-11,666.80

Finding the Fourth Proportional to 21,097.64, 29,115.32 and 11,666.80

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Solution

The fourth proportional to 21,097.64, 29,115.32 and 11,666.80 is: 16,100.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,097.64 : 29,115.32 = 11,666.80 : x
  2. Step 2: Convert to fraction form
    21,097.64/29,115.32 = 11,666.80/x
  3. Step 3: Cross multiply
    21,097.64x = 29,115.32 × 11,666.80
  4. Step 4: Simplify right side
    21,097.64x = 339,682,615.38
  5. Step 5: Solve for x
    x = 339,682,615.38/21,097.64
  6. Step 6: Final answer
    x = 16,100.50

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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.