Home / 10,112.98-13,929.68-7,874.68

Finding the Fourth Proportional to 10,112.98, 13,929.68 and 7,874.68

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Solution

The fourth proportional to 10,112.98, 13,929.68 and 7,874.68 is: 10,846.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,112.98 : 13,929.68 = 7,874.68 : x
  2. Step 2: Convert to fraction form
    10,112.98/13,929.68 = 7,874.68/x
  3. Step 3: Cross multiply
    10,112.98x = 13,929.68 × 7,874.68
  4. Step 4: Simplify right side
    10,112.98x = 109,691,772.50
  5. Step 5: Solve for x
    x = 109,691,772.50/10,112.98
  6. Step 6: Final answer
    x = 10,846.63

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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.