Home / 28,438.94-39,262.38-18,891.74

Finding the Fourth Proportional to 28,438.94, 39,262.38 and 18,891.74

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Solution

The fourth proportional to 28,438.94, 39,262.38 and 18,891.74 is: 26,081.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,438.94 : 39,262.38 = 18,891.74 : x
  2. Step 2: Convert to fraction form
    28,438.94/39,262.38 = 18,891.74/x
  3. Step 3: Cross multiply
    28,438.94x = 39,262.38 × 18,891.74
  4. Step 4: Simplify right side
    28,438.94x = 741,734,674.74
  5. Step 5: Solve for x
    x = 741,734,674.74/28,438.94
  6. Step 6: Final answer
    x = 26,081.66

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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.