Home / 28,198.06-38,895.72-18,139.62

Finding the Fourth Proportional to 28,198.06, 38,895.72 and 18,139.62

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Solution

The fourth proportional to 28,198.06, 38,895.72 and 18,139.62 is: 25,021.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,198.06 : 38,895.72 = 18,139.62 : x
  2. Step 2: Convert to fraction form
    28,198.06/38,895.72 = 18,139.62/x
  3. Step 3: Cross multiply
    28,198.06x = 38,895.72 × 18,139.62
  4. Step 4: Simplify right side
    28,198.06x = 705,553,580.43
  5. Step 5: Solve for x
    x = 705,553,580.43/28,198.06
  6. Step 6: Final answer
    x = 25,021.35

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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.