Home / 21,083.70-29,094.72-12,132.59

Finding the Fourth Proportional to 21,083.70, 29,094.72 and 12,132.59

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Solution

The fourth proportional to 21,083.70, 29,094.72 and 12,132.59 is: 16,742.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,083.70 : 29,094.72 = 12,132.59 : x
  2. Step 2: Convert to fraction form
    21,083.70/29,094.72 = 12,132.59/x
  3. Step 3: Cross multiply
    21,083.70x = 29,094.72 × 12,132.59
  4. Step 4: Simplify right side
    21,083.70x = 352,994,163.45
  5. Step 5: Solve for x
    x = 352,994,163.45/21,083.70
  6. Step 6: Final answer
    x = 16,742.51

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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.