Home / 21,187.80-29,172.70-17,994.44

Finding the Fourth Proportional to 21,187.80, 29,172.70 and 17,994.44

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Solution

The fourth proportional to 21,187.80, 29,172.70 and 17,994.44 is: 24,775.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,187.80 : 29,172.70 = 17,994.44 : x
  2. Step 2: Convert to fraction form
    21,187.80/29,172.70 = 17,994.44/x
  3. Step 3: Cross multiply
    21,187.80x = 29,172.70 × 17,994.44
  4. Step 4: Simplify right side
    21,187.80x = 524,946,399.79
  5. Step 5: Solve for x
    x = 524,946,399.79/21,187.80
  6. Step 6: Final answer
    x = 24,775.88

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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.