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Finding the Fourth Proportional to 12,999.90, 19,500.39 and 10,823.97

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Solution

The fourth proportional to 12,999.90, 19,500.39 and 10,823.97 is: 16,236.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,999.90 : 19,500.39 = 10,823.97 : x
  2. Step 2: Convert to fraction form
    12,999.90/19,500.39 = 10,823.97/x
  3. Step 3: Cross multiply
    12,999.90x = 19,500.39 × 10,823.97
  4. Step 4: Simplify right side
    12,999.90x = 211,071,636.35
  5. Step 5: Solve for x
    x = 211,071,636.35/12,999.90
  6. Step 6: Final answer
    x = 16,236.40

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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.