Home / 10,249.37-15,378.64-4,981.49

Finding the Fourth Proportional to 10,249.37, 15,378.64 and 4,981.49

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Solution

The fourth proportional to 10,249.37, 15,378.64 and 4,981.49 is: 7,474.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,249.37 : 15,378.64 = 4,981.49 : x
  2. Step 2: Convert to fraction form
    10,249.37/15,378.64 = 4,981.49/x
  3. Step 3: Cross multiply
    10,249.37x = 15,378.64 × 4,981.49
  4. Step 4: Simplify right side
    10,249.37x = 76,608,541.37
  5. Step 5: Solve for x
    x = 76,608,541.37/10,249.37
  6. Step 6: Final answer
    x = 7,474.46

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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.