Home / 28,661.11-39,554.27-15,915.76

Finding the Fourth Proportional to 28,661.11, 39,554.27 and 15,915.76

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Solution

The fourth proportional to 28,661.11, 39,554.27 and 15,915.76 is: 21,964.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,661.11 : 39,554.27 = 15,915.76 : x
  2. Step 2: Convert to fraction form
    28,661.11/39,554.27 = 15,915.76/x
  3. Step 3: Cross multiply
    28,661.11x = 39,554.27 × 15,915.76
  4. Step 4: Simplify right side
    28,661.11x = 629,536,268.30
  5. Step 5: Solve for x
    x = 629,536,268.30/28,661.11
  6. Step 6: Final answer
    x = 21,964.83

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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.