Home / 21,605.64-29,815.77-11,669.64

Finding the Fourth Proportional to 21,605.64, 29,815.77 and 11,669.64

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Solution

The fourth proportional to 21,605.64, 29,815.77 and 11,669.64 is: 16,104.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,605.64 : 29,815.77 = 11,669.64 : x
  2. Step 2: Convert to fraction form
    21,605.64/29,815.77 = 11,669.64/x
  3. Step 3: Cross multiply
    21,605.64x = 29,815.77 × 11,669.64
  4. Step 4: Simplify right side
    21,605.64x = 347,939,302.22
  5. Step 5: Solve for x
    x = 347,939,302.22/21,605.64
  6. Step 6: Final answer
    x = 16,104.10

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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.