Home / 28,666.20-39,541.83-20,153.28

Finding the Fourth Proportional to 28,666.20, 39,541.83 and 20,153.28

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Solution

The fourth proportional to 28,666.20, 39,541.83 and 20,153.28 is: 27,799.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,666.20 : 39,541.83 = 20,153.28 : x
  2. Step 2: Convert to fraction form
    28,666.20/39,541.83 = 20,153.28/x
  3. Step 3: Cross multiply
    28,666.20x = 39,541.83 × 20,153.28
  4. Step 4: Simplify right side
    28,666.20x = 796,897,571.70
  5. Step 5: Solve for x
    x = 796,897,571.70/28,666.20
  6. Step 6: Final answer
    x = 27,799.21

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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.