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Finding the Fourth Proportional to 12,800.84, 19,201.50 and 5,009.96

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Solution

The fourth proportional to 12,800.84, 19,201.50 and 5,009.96 is: 7,515.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,800.84 : 19,201.50 = 5,009.96 : x
  2. Step 2: Convert to fraction form
    12,800.84/19,201.50 = 5,009.96/x
  3. Step 3: Cross multiply
    12,800.84x = 19,201.50 × 5,009.96
  4. Step 4: Simplify right side
    12,800.84x = 96,198,746.94
  5. Step 5: Solve for x
    x = 96,198,746.94/12,800.84
  6. Step 6: Final answer
    x = 7,515.03

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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.