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Finding the Fourth Proportional to 14,465.34, 19,965.87 and 8,181.18

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Solution

The fourth proportional to 14,465.34, 19,965.87 and 8,181.18 is: 11,292.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,465.34 : 19,965.87 = 8,181.18 : x
  2. Step 2: Convert to fraction form
    14,465.34/19,965.87 = 8,181.18/x
  3. Step 3: Cross multiply
    14,465.34x = 19,965.87 × 8,181.18
  4. Step 4: Simplify right side
    14,465.34x = 163,344,376.33
  5. Step 5: Solve for x
    x = 163,344,376.33/14,465.34
  6. Step 6: Final answer
    x = 11,292.12

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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.