Home / 19,329.18-28,992.81-11,328.39

Finding the Fourth Proportional to 19,329.18, 28,992.81 and 11,328.39

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Solution

The fourth proportional to 19,329.18, 28,992.81 and 11,328.39 is: 16,992.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,329.18 : 28,992.81 = 11,328.39 : x
  2. Step 2: Convert to fraction form
    19,329.18/28,992.81 = 11,328.39/x
  3. Step 3: Cross multiply
    19,329.18x = 28,992.81 × 11,328.39
  4. Step 4: Simplify right side
    19,329.18x = 328,441,858.88
  5. Step 5: Solve for x
    x = 328,441,858.88/19,329.18
  6. Step 6: Final answer
    x = 16,992.02

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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.