Home / 30,940.92-42,720.66-19,020.24

Finding the Fourth Proportional to 30,940.92, 42,720.66 and 19,020.24

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Solution

The fourth proportional to 30,940.92, 42,720.66 and 19,020.24 is: 26,261.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,940.92 : 42,720.66 = 19,020.24 : x
  2. Step 2: Convert to fraction form
    30,940.92/42,720.66 = 19,020.24/x
  3. Step 3: Cross multiply
    30,940.92x = 42,720.66 × 19,020.24
  4. Step 4: Simplify right side
    30,940.92x = 812,557,206.16
  5. Step 5: Solve for x
    x = 812,557,206.16/30,940.92
  6. Step 6: Final answer
    x = 26,261.57

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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.