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Finding the Fourth Proportional to 14,184.62, 21,253.49 and 8,621.13

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Solution

The fourth proportional to 14,184.62, 21,253.49 and 8,621.13 is: 12,917.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,184.62 : 21,253.49 = 8,621.13 : x
  2. Step 2: Convert to fraction form
    14,184.62/21,253.49 = 8,621.13/x
  3. Step 3: Cross multiply
    14,184.62x = 21,253.49 × 8,621.13
  4. Step 4: Simplify right side
    14,184.62x = 183,229,169.17
  5. Step 5: Solve for x
    x = 183,229,169.17/14,184.62
  6. Step 6: Final answer
    x = 12,917.45

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1.5x scale

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.