Home / 30,804.12-42,514.30-18,874.38

Finding the Fourth Proportional to 30,804.12, 42,514.30 and 18,874.38

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Solution

The fourth proportional to 30,804.12, 42,514.30 and 18,874.38 is: 26,049.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,804.12 : 42,514.30 = 18,874.38 : x
  2. Step 2: Convert to fraction form
    30,804.12/42,514.30 = 18,874.38/x
  3. Step 3: Cross multiply
    30,804.12x = 42,514.30 × 18,874.38
  4. Step 4: Simplify right side
    30,804.12x = 802,430,771.77
  5. Step 5: Solve for x
    x = 802,430,771.77/30,804.12
  6. Step 6: Final answer
    x = 26,049.46

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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.