Home / 28,578.24-39,434.72-16,639.05

Finding the Fourth Proportional to 28,578.24, 39,434.72 and 16,639.05

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Solution

The fourth proportional to 28,578.24, 39,434.72 and 16,639.05 is: 22,959.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,578.24 : 39,434.72 = 16,639.05 : x
  2. Step 2: Convert to fraction form
    28,578.24/39,434.72 = 16,639.05/x
  3. Step 3: Cross multiply
    28,578.24x = 39,434.72 × 16,639.05
  4. Step 4: Simplify right side
    28,578.24x = 656,156,194.62
  5. Step 5: Solve for x
    x = 656,156,194.62/28,578.24
  6. Step 6: Final answer
    x = 22,959.99

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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.