Home / 18,977.20-28,463.10-11,935.74

Finding the Fourth Proportional to 18,977.20, 28,463.10 and 11,935.74

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Solution

The fourth proportional to 18,977.20, 28,463.10 and 11,935.74 is: 17,901.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,977.20 : 28,463.10 = 11,935.74 : x
  2. Step 2: Convert to fraction form
    18,977.20/28,463.10 = 11,935.74/x
  3. Step 3: Cross multiply
    18,977.20x = 28,463.10 × 11,935.74
  4. Step 4: Simplify right side
    18,977.20x = 339,728,161.19
  5. Step 5: Solve for x
    x = 339,728,161.19/18,977.20
  6. Step 6: Final answer
    x = 17,901.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.