Home / 30,942.37-42,700.74-18,195.81

Finding the Fourth Proportional to 30,942.37, 42,700.74 and 18,195.81

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Solution

The fourth proportional to 30,942.37, 42,700.74 and 18,195.81 is: 25,110.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,942.37 : 42,700.74 = 18,195.81 : x
  2. Step 2: Convert to fraction form
    30,942.37/42,700.74 = 18,195.81/x
  3. Step 3: Cross multiply
    30,942.37x = 42,700.74 × 18,195.81
  4. Step 4: Simplify right side
    30,942.37x = 776,974,323.54
  5. Step 5: Solve for x
    x = 776,974,323.54/30,942.37
  6. Step 6: Final answer
    x = 25,110.37

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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.