Home / 30,736.40-42,416.70-18,797.20

Finding the Fourth Proportional to 30,736.40, 42,416.70 and 18,797.20

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Solution

The fourth proportional to 30,736.40, 42,416.70 and 18,797.20 is: 25,940.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,736.40 : 42,416.70 = 18,797.20 : x
  2. Step 2: Convert to fraction form
    30,736.40/42,416.70 = 18,797.20/x
  3. Step 3: Cross multiply
    30,736.40x = 42,416.70 × 18,797.20
  4. Step 4: Simplify right side
    30,736.40x = 797,315,193.24
  5. Step 5: Solve for x
    x = 797,315,193.24/30,736.40
  6. Step 6: Final answer
    x = 25,940.42

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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.