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Finding the Fourth Proportional to 12,699.64, 19,042.52 and 10,083.94

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Solution

The fourth proportional to 12,699.64, 19,042.52 and 10,083.94 is: 15,120.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,699.64 : 19,042.52 = 10,083.94 : x
  2. Step 2: Convert to fraction form
    12,699.64/19,042.52 = 10,083.94/x
  3. Step 3: Cross multiply
    12,699.64x = 19,042.52 × 10,083.94
  4. Step 4: Simplify right side
    12,699.64x = 192,023,666.58
  5. Step 5: Solve for x
    x = 192,023,666.58/12,699.64
  6. Step 6: Final answer
    x = 15,120.41

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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.