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Finding the Fourth Proportional to 14,605, 20,154.90 and 8,317.96

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Solution

The fourth proportional to 14,605, 20,154.90 and 8,317.96 is: 11,478.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,605 : 20,154.90 = 8,317.96 : x
  2. Step 2: Convert to fraction form
    14,605/20,154.90 = 8,317.96/x
  3. Step 3: Cross multiply
    14,605x = 20,154.90 × 8,317.96
  4. Step 4: Simplify right side
    14,605x = 167,647,652.00
  5. Step 5: Solve for x
    x = 167,647,652.00/14,605
  6. Step 6: Final answer
    x = 11,478.78

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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.