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Finding the Fourth Proportional to 19,309, 26,643.44 and 10,808.88

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Solution

The fourth proportional to 19,309, 26,643.44 and 10,808.88 is: 14,914.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,309 : 26,643.44 = 10,808.88 : x
  2. Step 2: Convert to fraction form
    19,309/26,643.44 = 10,808.88/x
  3. Step 3: Cross multiply
    19,309x = 26,643.44 × 10,808.88
  4. Step 4: Simplify right side
    19,309x = 287,985,745.75
  5. Step 5: Solve for x
    x = 287,985,745.75/19,309
  6. Step 6: Final answer
    x = 14,914.59

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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.