Home / 21,339.45-29,447.96-11,778.98

Finding the Fourth Proportional to 21,339.45, 29,447.96 and 11,778.98

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Solution

The fourth proportional to 21,339.45, 29,447.96 and 11,778.98 is: 16,254.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,339.45 : 29,447.96 = 11,778.98 : x
  2. Step 2: Convert to fraction form
    21,339.45/29,447.96 = 11,778.98/x
  3. Step 3: Cross multiply
    21,339.45x = 29,447.96 × 11,778.98
  4. Step 4: Simplify right side
    21,339.45x = 346,866,725.75
  5. Step 5: Solve for x
    x = 346,866,725.75/21,339.45
  6. Step 6: Final answer
    x = 16,254.72

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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.