Home / 20,030.94-30,198.51-18,959.31

Finding the Fourth Proportional to 20,030.94, 30,198.51 and 18,959.31

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Solution

The fourth proportional to 20,030.94, 30,198.51 and 18,959.31 is: 28,582.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,030.94 : 30,198.51 = 18,959.31 : x
  2. Step 2: Convert to fraction form
    20,030.94/30,198.51 = 18,959.31/x
  3. Step 3: Cross multiply
    20,030.94x = 30,198.51 × 18,959.31
  4. Step 4: Simplify right side
    20,030.94x = 572,542,912.63
  5. Step 5: Solve for x
    x = 572,542,912.63/20,030.94
  6. Step 6: Final answer
    x = 28,582.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.