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Finding the Fourth Proportional to 19,879, 27,432.44 and 10,926.50

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Solution

The fourth proportional to 19,879, 27,432.44 and 10,926.50 is: 15,078.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,879 : 27,432.44 = 10,926.50 : x
  2. Step 2: Convert to fraction form
    19,879/27,432.44 = 10,926.50/x
  3. Step 3: Cross multiply
    19,879x = 27,432.44 × 10,926.50
  4. Step 4: Simplify right side
    19,879x = 299,740,555.66
  5. Step 5: Solve for x
    x = 299,740,555.66/19,879
  6. Step 6: Final answer
    x = 15,078.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.