Home / 30,913.91-42,662.84-19,579.25

Finding the Fourth Proportional to 30,913.91, 42,662.84 and 19,579.25

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Solution

The fourth proportional to 30,913.91, 42,662.84 and 19,579.25 is: 27,020.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,913.91 : 42,662.84 = 19,579.25 : x
  2. Step 2: Convert to fraction form
    30,913.91/42,662.84 = 19,579.25/x
  3. Step 3: Cross multiply
    30,913.91x = 42,662.84 × 19,579.25
  4. Step 4: Simplify right side
    30,913.91x = 835,306,418.83
  5. Step 5: Solve for x
    x = 835,306,418.83/30,913.91
  6. Step 6: Final answer
    x = 27,020.41

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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.