Home / 30,933.86-42,678.90-18,182.96

Finding the Fourth Proportional to 30,933.86, 42,678.90 and 18,182.96

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Solution

The fourth proportional to 30,933.86, 42,678.90 and 18,182.96 is: 25,086.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,933.86 : 42,678.90 = 18,182.96 : x
  2. Step 2: Convert to fraction form
    30,933.86/42,678.90 = 18,182.96/x
  3. Step 3: Cross multiply
    30,933.86x = 42,678.90 × 18,182.96
  4. Step 4: Simplify right side
    30,933.86x = 776,028,731.54
  5. Step 5: Solve for x
    x = 776,028,731.54/30,933.86
  6. Step 6: Final answer
    x = 25,086.71

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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.