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Finding the Fourth Proportional to 28,103.04, 38,786.04 and 16,166.16

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Solution

The fourth proportional to 28,103.04, 38,786.04 and 16,166.16 is: 22,311.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,103.04 : 38,786.04 = 16,166.16 : x
  2. Step 2: Convert to fraction form
    28,103.04/38,786.04 = 16,166.16/x
  3. Step 3: Cross multiply
    28,103.04x = 38,786.04 × 16,166.16
  4. Step 4: Simplify right side
    28,103.04x = 627,021,328.41
  5. Step 5: Solve for x
    x = 627,021,328.41/28,103.04
  6. Step 6: Final answer
    x = 22,311.51

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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.