Home / 19,785.82-29,681.68-5,745.96

Finding the Fourth Proportional to 19,785.82, 29,681.68 and 5,745.96

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Solution

The fourth proportional to 19,785.82, 29,681.68 and 5,745.96 is: 8,619.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,785.82 : 29,681.68 = 5,745.96 : x
  2. Step 2: Convert to fraction form
    19,785.82/29,681.68 = 5,745.96/x
  3. Step 3: Cross multiply
    19,785.82x = 29,681.68 × 5,745.96
  4. Step 4: Simplify right side
    19,785.82x = 170,549,746.01
  5. Step 5: Solve for x
    x = 170,549,746.01/19,785.82
  6. Step 6: Final answer
    x = 8,619.80

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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.