Home / 28,004.57-38,660.59-18,977.62

Finding the Fourth Proportional to 28,004.57, 38,660.59 and 18,977.62

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Solution

The fourth proportional to 28,004.57, 38,660.59 and 18,977.62 is: 26,198.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,004.57 : 38,660.59 = 18,977.62 : x
  2. Step 2: Convert to fraction form
    28,004.57/38,660.59 = 18,977.62/x
  3. Step 3: Cross multiply
    28,004.57x = 38,660.59 × 18,977.62
  4. Step 4: Simplify right side
    28,004.57x = 733,685,959.12
  5. Step 5: Solve for x
    x = 733,685,959.12/28,004.57
  6. Step 6: Final answer
    x = 26,198.79

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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.