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Finding the Fourth Proportional to 18,775.96, 28,173.34 and 8,776.52

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Solution

The fourth proportional to 18,775.96, 28,173.34 and 8,776.52 is: 13,169.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,775.96 : 28,173.34 = 8,776.52 : x
  2. Step 2: Convert to fraction form
    18,775.96/28,173.34 = 8,776.52/x
  3. Step 3: Cross multiply
    18,775.96x = 28,173.34 × 8,776.52
  4. Step 4: Simplify right side
    18,775.96x = 247,263,881.98
  5. Step 5: Solve for x
    x = 247,263,881.98/18,775.96
  6. Step 6: Final answer
    x = 13,169.17

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.