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Finding the Fourth Proportional to 13,805.68, 19,051.68 and 7,517.92

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Solution

The fourth proportional to 13,805.68, 19,051.68 and 7,517.92 is: 10,374.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,805.68 : 19,051.68 = 7,517.92 : x
  2. Step 2: Convert to fraction form
    13,805.68/19,051.68 = 7,517.92/x
  3. Step 3: Cross multiply
    13,805.68x = 19,051.68 × 7,517.92
  4. Step 4: Simplify right side
    13,805.68x = 143,229,006.11
  5. Step 5: Solve for x
    x = 143,229,006.11/13,805.68
  6. Step 6: Final answer
    x = 10,374.64

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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.