Home / 21,548.58-29,739.82-12,118.98

Finding the Fourth Proportional to 21,548.58, 29,739.82 and 12,118.98

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Solution

The fourth proportional to 21,548.58, 29,739.82 and 12,118.98 is: 16,725.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,548.58 : 29,739.82 = 12,118.98 : x
  2. Step 2: Convert to fraction form
    21,548.58/29,739.82 = 12,118.98/x
  3. Step 3: Cross multiply
    21,548.58x = 29,739.82 × 12,118.98
  4. Step 4: Simplify right side
    21,548.58x = 360,416,283.78
  5. Step 5: Solve for x
    x = 360,416,283.78/21,548.58
  6. Step 6: Final answer
    x = 16,725.76

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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.