Home / 10,140.95-15,212.37-2,745.47

Finding the Fourth Proportional to 10,140.95, 15,212.37 and 2,745.47

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Solution

The fourth proportional to 10,140.95, 15,212.37 and 2,745.47 is: 4,118.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,140.95 : 15,212.37 = 2,745.47 : x
  2. Step 2: Convert to fraction form
    10,140.95/15,212.37 = 2,745.47/x
  3. Step 3: Cross multiply
    10,140.95x = 15,212.37 × 2,745.47
  4. Step 4: Simplify right side
    10,140.95x = 41,765,105.46
  5. Step 5: Solve for x
    x = 41,765,105.46/10,140.95
  6. Step 6: Final answer
    x = 4,118.46

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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.