Home / 28,140.57-38,828.25-16,200.78

Finding the Fourth Proportional to 28,140.57, 38,828.25 and 16,200.78

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Solution

The fourth proportional to 28,140.57, 38,828.25 and 16,200.78 is: 22,353.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,140.57 : 38,828.25 = 16,200.78 : x
  2. Step 2: Convert to fraction form
    28,140.57/38,828.25 = 16,200.78/x
  3. Step 3: Cross multiply
    28,140.57x = 38,828.25 × 16,200.78
  4. Step 4: Simplify right side
    28,140.57x = 629,047,936.04
  5. Step 5: Solve for x
    x = 629,047,936.04/28,140.57
  6. Step 6: Final answer
    x = 22,353.77

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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.