Home / 21,159.56-29,193.60-12,205.88

Finding the Fourth Proportional to 21,159.56, 29,193.60 and 12,205.88

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Solution

The fourth proportional to 21,159.56, 29,193.60 and 12,205.88 is: 16,840.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,159.56 : 29,193.60 = 12,205.88 : x
  2. Step 2: Convert to fraction form
    21,159.56/29,193.60 = 12,205.88/x
  3. Step 3: Cross multiply
    21,159.56x = 29,193.60 × 12,205.88
  4. Step 4: Simplify right side
    21,159.56x = 356,333,578.37
  5. Step 5: Solve for x
    x = 356,333,578.37/21,159.56
  6. Step 6: Final answer
    x = 16,840.31

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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.