Home / 28,553.64-39,404.34-15,807.04

Finding the Fourth Proportional to 28,553.64, 39,404.34 and 15,807.04

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Solution

The fourth proportional to 28,553.64, 39,404.34 and 15,807.04 is: 21,813.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,553.64 : 39,404.34 = 15,807.04 : x
  2. Step 2: Convert to fraction form
    28,553.64/39,404.34 = 15,807.04/x
  3. Step 3: Cross multiply
    28,553.64x = 39,404.34 × 15,807.04
  4. Step 4: Simplify right side
    28,553.64x = 622,865,865.22
  5. Step 5: Solve for x
    x = 622,865,865.22/28,553.64
  6. Step 6: Final answer
    x = 21,813.88

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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.