Home / 28,899.72-39,914.52-19,451.88

Finding the Fourth Proportional to 28,899.72, 39,914.52 and 19,451.88

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Solution

The fourth proportional to 28,899.72, 39,914.52 and 19,451.88 is: 26,865.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,899.72 : 39,914.52 = 19,451.88 : x
  2. Step 2: Convert to fraction form
    28,899.72/39,914.52 = 19,451.88/x
  3. Step 3: Cross multiply
    28,899.72x = 39,914.52 × 19,451.88
  4. Step 4: Simplify right side
    28,899.72x = 776,412,453.30
  5. Step 5: Solve for x
    x = 776,412,453.30/28,899.72
  6. Step 6: Final answer
    x = 26,865.74

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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.