Home / 28,108.65-38,794.01-16,778.63

Finding the Fourth Proportional to 28,108.65, 38,794.01 and 16,778.63

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Solution

The fourth proportional to 28,108.65, 38,794.01 and 16,778.63 is: 23,156.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,108.65 : 38,794.01 = 16,778.63 : x
  2. Step 2: Convert to fraction form
    28,108.65/38,794.01 = 16,778.63/x
  3. Step 3: Cross multiply
    28,108.65x = 38,794.01 × 16,778.63
  4. Step 4: Simplify right side
    28,108.65x = 650,910,187.98
  5. Step 5: Solve for x
    x = 650,910,187.98/28,108.65
  6. Step 6: Final answer
    x = 23,156.94

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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.