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Finding the Fourth Proportional to 14,391.84, 19,861.76 and 8,018.88

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Solution

The fourth proportional to 14,391.84, 19,861.76 and 8,018.88 is: 11,066.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,391.84 : 19,861.76 = 8,018.88 : x
  2. Step 2: Convert to fraction form
    14,391.84/19,861.76 = 8,018.88/x
  3. Step 3: Cross multiply
    14,391.84x = 19,861.76 × 8,018.88
  4. Step 4: Simplify right side
    14,391.84x = 159,269,070.03
  5. Step 5: Solve for x
    x = 159,269,070.03/14,391.84
  6. Step 6: Final answer
    x = 11,066.62

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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.