Home / 28,176-38,884.10-15,600.75

Finding the Fourth Proportional to 28,176, 38,884.10 and 15,600.75

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Solution

The fourth proportional to 28,176, 38,884.10 and 15,600.75 is: 21,529.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,176 : 38,884.10 = 15,600.75 : x
  2. Step 2: Convert to fraction form
    28,176/38,884.10 = 15,600.75/x
  3. Step 3: Cross multiply
    28,176x = 38,884.10 × 15,600.75
  4. Step 4: Simplify right side
    28,176x = 606,621,123.08
  5. Step 5: Solve for x
    x = 606,621,123.08/28,176
  6. Step 6: Final answer
    x = 21,529.71

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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.