Home / 28,386.12-39,169.86-16,453.20

Finding the Fourth Proportional to 28,386.12, 39,169.86 and 16,453.20

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Solution

The fourth proportional to 28,386.12, 39,169.86 and 16,453.20 is: 22,703.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,386.12 : 39,169.86 = 16,453.20 : x
  2. Step 2: Convert to fraction form
    28,386.12/39,169.86 = 16,453.20/x
  3. Step 3: Cross multiply
    28,386.12x = 39,169.86 × 16,453.20
  4. Step 4: Simplify right side
    28,386.12x = 644,469,540.55
  5. Step 5: Solve for x
    x = 644,469,540.55/28,386.12
  6. Step 6: Final answer
    x = 22,703.69

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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.