Home / 19,329.78-29,005.60-8,235.30

Finding the Fourth Proportional to 19,329.78, 29,005.60 and 8,235.30

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Solution

The fourth proportional to 19,329.78, 29,005.60 and 8,235.30 is: 12,357.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,329.78 : 29,005.60 = 8,235.30 : x
  2. Step 2: Convert to fraction form
    19,329.78/29,005.60 = 8,235.30/x
  3. Step 3: Cross multiply
    19,329.78x = 29,005.60 × 8,235.30
  4. Step 4: Simplify right side
    19,329.78x = 238,869,817.68
  5. Step 5: Solve for x
    x = 238,869,817.68/19,329.78
  6. Step 6: Final answer
    x = 12,357.61

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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.