Home / 12,015.24-18,018.02-4,990.48

Finding the Fourth Proportional to 12,015.24, 18,018.02 and 4,990.48

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Solution

The fourth proportional to 12,015.24, 18,018.02 and 4,990.48 is: 7,483.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,015.24 : 18,018.02 = 4,990.48 : x
  2. Step 2: Convert to fraction form
    12,015.24/18,018.02 = 4,990.48/x
  3. Step 3: Cross multiply
    12,015.24x = 18,018.02 × 4,990.48
  4. Step 4: Simplify right side
    12,015.24x = 89,918,568.45
  5. Step 5: Solve for x
    x = 89,918,568.45/12,015.24
  6. Step 6: Final answer
    x = 7,483.71

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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.