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Finding the Fourth Proportional to 18,917.68, 28,401.60 and 16,162.06

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Solution

The fourth proportional to 18,917.68, 28,401.60 and 16,162.06 is: 24,264.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,917.68 : 28,401.60 = 16,162.06 : x
  2. Step 2: Convert to fraction form
    18,917.68/28,401.60 = 16,162.06/x
  3. Step 3: Cross multiply
    18,917.68x = 28,401.60 × 16,162.06
  4. Step 4: Simplify right side
    18,917.68x = 459,028,363.30
  5. Step 5: Solve for x
    x = 459,028,363.30/18,917.68
  6. Step 6: Final answer
    x = 24,264.52

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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.