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Finding the Fourth Proportional to 19,328.60, 28,992.90 and 11,552.60

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Solution

The fourth proportional to 19,328.60, 28,992.90 and 11,552.60 is: 17,328.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,328.60 : 28,992.90 = 11,552.60 : x
  2. Step 2: Convert to fraction form
    19,328.60/28,992.90 = 11,552.60/x
  3. Step 3: Cross multiply
    19,328.60x = 28,992.90 × 11,552.60
  4. Step 4: Simplify right side
    19,328.60x = 334,943,376.54
  5. Step 5: Solve for x
    x = 334,943,376.54/19,328.60
  6. Step 6: Final answer
    x = 17,328.90

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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.