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Finding the Fourth Proportional to 14,446.71, 21,687.35 and 8,606.07

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Solution

The fourth proportional to 14,446.71, 21,687.35 and 8,606.07 is: 12,919.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,446.71 : 21,687.35 = 8,606.07 : x
  2. Step 2: Convert to fraction form
    14,446.71/21,687.35 = 8,606.07/x
  3. Step 3: Cross multiply
    14,446.71x = 21,687.35 × 8,606.07
  4. Step 4: Simplify right side
    14,446.71x = 186,642,809.18
  5. Step 5: Solve for x
    x = 186,642,809.18/14,446.71
  6. Step 6: Final answer
    x = 12,919.40

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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.