Home / 21,257.10-29,336.72-11,698.90

Finding the Fourth Proportional to 21,257.10, 29,336.72 and 11,698.90

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Solution

The fourth proportional to 21,257.10, 29,336.72 and 11,698.90 is: 16,145.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,257.10 : 29,336.72 = 11,698.90 : x
  2. Step 2: Convert to fraction form
    21,257.10/29,336.72 = 11,698.90/x
  3. Step 3: Cross multiply
    21,257.10x = 29,336.72 × 11,698.90
  4. Step 4: Simplify right side
    21,257.10x = 343,207,221.77
  5. Step 5: Solve for x
    x = 343,207,221.77/21,257.10
  6. Step 6: Final answer
    x = 16,145.53

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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.