Home / 28,385.06-39,169.34-16,899.36

Finding the Fourth Proportional to 28,385.06, 39,169.34 and 16,899.36

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Solution

The fourth proportional to 28,385.06, 39,169.34 and 16,899.36 is: 23,319.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,385.06 : 39,169.34 = 16,899.36 : x
  2. Step 2: Convert to fraction form
    28,385.06/39,169.34 = 16,899.36/x
  3. Step 3: Cross multiply
    28,385.06x = 39,169.34 × 16,899.36
  4. Step 4: Simplify right side
    28,385.06x = 661,936,497.28
  5. Step 5: Solve for x
    x = 661,936,497.28/28,385.06
  6. Step 6: Final answer
    x = 23,319.89

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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.