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Finding the Fourth Proportional to 14,495.33, 19,999 and 8,121.05

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Solution

The fourth proportional to 14,495.33, 19,999 and 8,121.05 is: 11,204.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,495.33 : 19,999 = 8,121.05 : x
  2. Step 2: Convert to fraction form
    14,495.33/19,999 = 8,121.05/x
  3. Step 3: Cross multiply
    14,495.33x = 19,999 × 8,121.05
  4. Step 4: Simplify right side
    14,495.33x = 162,412,878.95
  5. Step 5: Solve for x
    x = 162,412,878.95/14,495.33
  6. Step 6: Final answer
    x = 11,204.50

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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.