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Finding the Fourth Proportional to 14,631, 21,918.96 and 7,226.80

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Solution

The fourth proportional to 14,631, 21,918.96 and 7,226.80 is: 10,826.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,631 : 21,918.96 = 7,226.80 : x
  2. Step 2: Convert to fraction form
    14,631/21,918.96 = 7,226.80/x
  3. Step 3: Cross multiply
    14,631x = 21,918.96 × 7,226.80
  4. Step 4: Simplify right side
    14,631x = 158,403,940.13
  5. Step 5: Solve for x
    x = 158,403,940.13/14,631
  6. Step 6: Final answer
    x = 10,826.60

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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.