Home / 30,450.62-42,030.15-17,879.42

Finding the Fourth Proportional to 30,450.62, 42,030.15 and 17,879.42

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Solution

The fourth proportional to 30,450.62, 42,030.15 and 17,879.42 is: 24,678.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,450.62 : 42,030.15 = 17,879.42 : x
  2. Step 2: Convert to fraction form
    30,450.62/42,030.15 = 17,879.42/x
  3. Step 3: Cross multiply
    30,450.62x = 42,030.15 × 17,879.42
  4. Step 4: Simplify right side
    30,450.62x = 751,474,704.51
  5. Step 5: Solve for x
    x = 751,474,704.51/30,450.62
  6. Step 6: Final answer
    x = 24,678.47

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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.