Home / 21,235.86-29,296.86-12,738.36

Finding the Fourth Proportional to 21,235.86, 29,296.86 and 12,738.36

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Solution

The fourth proportional to 21,235.86, 29,296.86 and 12,738.36 is: 17,573.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,235.86 : 29,296.86 = 12,738.36 : x
  2. Step 2: Convert to fraction form
    21,235.86/29,296.86 = 12,738.36/x
  3. Step 3: Cross multiply
    21,235.86x = 29,296.86 × 12,738.36
  4. Step 4: Simplify right side
    21,235.86x = 373,193,949.55
  5. Step 5: Solve for x
    x = 373,193,949.55/21,235.86
  6. Step 6: Final answer
    x = 17,573.76

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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.