Home / 28,856.56-39,821.88-16,109.01

Finding the Fourth Proportional to 28,856.56, 39,821.88 and 16,109.01

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Solution

The fourth proportional to 28,856.56, 39,821.88 and 16,109.01 is: 22,230.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,856.56 : 39,821.88 = 16,109.01 : x
  2. Step 2: Convert to fraction form
    28,856.56/39,821.88 = 16,109.01/x
  3. Step 3: Cross multiply
    28,856.56x = 39,821.88 × 16,109.01
  4. Step 4: Simplify right side
    28,856.56x = 641,491,063.14
  5. Step 5: Solve for x
    x = 641,491,063.14/28,856.56
  6. Step 6: Final answer
    x = 22,230.34

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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.