Home / 12,740.89-19,112.03-5,345.66

Finding the Fourth Proportional to 12,740.89, 19,112.03 and 5,345.66

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Solution

The fourth proportional to 12,740.89, 19,112.03 and 5,345.66 is: 8,018.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,740.89 : 19,112.03 = 5,345.66 : x
  2. Step 2: Convert to fraction form
    12,740.89/19,112.03 = 5,345.66/x
  3. Step 3: Cross multiply
    12,740.89x = 19,112.03 × 5,345.66
  4. Step 4: Simplify right side
    12,740.89x = 102,166,414.29
  5. Step 5: Solve for x
    x = 102,166,414.29/12,740.89
  6. Step 6: Final answer
    x = 8,018.78

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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.