Home / 28,920.05-39,910.49-16,173.71

Finding the Fourth Proportional to 28,920.05, 39,910.49 and 16,173.71

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Solution

The fourth proportional to 28,920.05, 39,910.49 and 16,173.71 is: 22,320.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,920.05 : 39,910.49 = 16,173.71 : x
  2. Step 2: Convert to fraction form
    28,920.05/39,910.49 = 16,173.71/x
  3. Step 3: Cross multiply
    28,920.05x = 39,910.49 × 16,173.71
  4. Step 4: Simplify right side
    28,920.05x = 645,500,710.13
  5. Step 5: Solve for x
    x = 645,500,710.13/28,920.05
  6. Step 6: Final answer
    x = 22,320.18

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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.