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Finding the Fourth Proportional to 12,745.68, 19,099.92 and 9,055.08

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Solution

The fourth proportional to 12,745.68, 19,099.92 and 9,055.08 is: 13,569.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,745.68 : 19,099.92 = 9,055.08 : x
  2. Step 2: Convert to fraction form
    12,745.68/19,099.92 = 9,055.08/x
  3. Step 3: Cross multiply
    12,745.68x = 19,099.92 × 9,055.08
  4. Step 4: Simplify right side
    12,745.68x = 172,951,303.59
  5. Step 5: Solve for x
    x = 172,951,303.59/12,745.68
  6. Step 6: Final answer
    x = 13,569.41

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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.