Home / 30,923.42-42,657.99-21,974.54

Finding the Fourth Proportional to 30,923.42, 42,657.99 and 21,974.54

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Solution

The fourth proportional to 30,923.42, 42,657.99 and 21,974.54 is: 30,313.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,923.42 : 42,657.99 = 21,974.54 : x
  2. Step 2: Convert to fraction form
    30,923.42/42,657.99 = 21,974.54/x
  3. Step 3: Cross multiply
    30,923.42x = 42,657.99 × 21,974.54
  4. Step 4: Simplify right side
    30,923.42x = 937,389,707.57
  5. Step 5: Solve for x
    x = 937,389,707.57/30,923.42
  6. Step 6: Final answer
    x = 30,313.26

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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.