Home / 21,338.11-29,447.61-11,779.05

Finding the Fourth Proportional to 21,338.11, 29,447.61 and 11,779.05

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Solution

The fourth proportional to 21,338.11, 29,447.61 and 11,779.05 is: 16,255.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,338.11 : 29,447.61 = 11,779.05 : x
  2. Step 2: Convert to fraction form
    21,338.11/29,447.61 = 11,779.05/x
  3. Step 3: Cross multiply
    21,338.11x = 29,447.61 × 11,779.05
  4. Step 4: Simplify right side
    21,338.11x = 346,864,771.18
  5. Step 5: Solve for x
    x = 346,864,771.18/21,338.11
  6. Step 6: Final answer
    x = 16,255.64

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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.