Home / 18,100.12-24,977.92-10,142.50

Finding the Fourth Proportional to 18,100.12, 24,977.92 and 10,142.50

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Solution

The fourth proportional to 18,100.12, 24,977.92 and 10,142.50 is: 13,996.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,100.12 : 24,977.92 = 10,142.50 : x
  2. Step 2: Convert to fraction form
    18,100.12/24,977.92 = 10,142.50/x
  3. Step 3: Cross multiply
    18,100.12x = 24,977.92 × 10,142.50
  4. Step 4: Simplify right side
    18,100.12x = 253,338,553.60
  5. Step 5: Solve for x
    x = 253,338,553.60/18,100.12
  6. Step 6: Final answer
    x = 13,996.51

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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.