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Finding the Fourth Proportional to 17,874.81, 24,670.20 and 9,919.59

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Solution

The fourth proportional to 17,874.81, 24,670.20 and 9,919.59 is: 13,690.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,874.81 : 24,670.20 = 9,919.59 : x
  2. Step 2: Convert to fraction form
    17,874.81/24,670.20 = 9,919.59/x
  3. Step 3: Cross multiply
    17,874.81x = 24,670.20 × 9,919.59
  4. Step 4: Simplify right side
    17,874.81x = 244,718,269.22
  5. Step 5: Solve for x
    x = 244,718,269.22/17,874.81
  6. Step 6: Final answer
    x = 13,690.68

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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.