Home / 13,850.72-19,112.20-7,800.18

Finding the Fourth Proportional to 13,850.72, 19,112.20 and 7,800.18

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Solution

The fourth proportional to 13,850.72, 19,112.20 and 7,800.18 is: 10,763.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,850.72 : 19,112.20 = 7,800.18 : x
  2. Step 2: Convert to fraction form
    13,850.72/19,112.20 = 7,800.18/x
  3. Step 3: Cross multiply
    13,850.72x = 19,112.20 × 7,800.18
  4. Step 4: Simplify right side
    13,850.72x = 149,078,600.20
  5. Step 5: Solve for x
    x = 149,078,600.20/13,850.72
  6. Step 6: Final answer
    x = 10,763.24

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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.