Home / 28,709.89-39,619.47-16,134.64

Finding the Fourth Proportional to 28,709.89, 39,619.47 and 16,134.64

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Solution

The fourth proportional to 28,709.89, 39,619.47 and 16,134.64 is: 22,265.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,709.89 : 39,619.47 = 16,134.64 : x
  2. Step 2: Convert to fraction form
    28,709.89/39,619.47 = 16,134.64/x
  3. Step 3: Cross multiply
    28,709.89x = 39,619.47 × 16,134.64
  4. Step 4: Simplify right side
    28,709.89x = 639,245,885.44
  5. Step 5: Solve for x
    x = 639,245,885.44/28,709.89
  6. Step 6: Final answer
    x = 22,265.70

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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.