Home / 30,979.72-42,754.26-18,233.56

Finding the Fourth Proportional to 30,979.72, 42,754.26 and 18,233.56

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Solution

The fourth proportional to 30,979.72, 42,754.26 and 18,233.56 is: 25,163.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,979.72 : 42,754.26 = 18,233.56 : x
  2. Step 2: Convert to fraction form
    30,979.72/42,754.26 = 18,233.56/x
  3. Step 3: Cross multiply
    30,979.72x = 42,754.26 × 18,233.56
  4. Step 4: Simplify right side
    30,979.72x = 779,562,364.97
  5. Step 5: Solve for x
    x = 779,562,364.97/30,979.72
  6. Step 6: Final answer
    x = 25,163.63

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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.