Home / 30,933.36-42,678.21-18,182.46

Finding the Fourth Proportional to 30,933.36, 42,678.21 and 18,182.46

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Solution

The fourth proportional to 30,933.36, 42,678.21 and 18,182.46 is: 25,086.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,933.36 : 42,678.21 = 18,182.46 : x
  2. Step 2: Convert to fraction form
    30,933.36/42,678.21 = 18,182.46/x
  3. Step 3: Cross multiply
    30,933.36x = 42,678.21 × 18,182.46
  4. Step 4: Simplify right side
    30,933.36x = 775,994,846.20
  5. Step 5: Solve for x
    x = 775,994,846.20/30,933.36
  6. Step 6: Final answer
    x = 25,086.02

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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.