Home / 30,393.20-41,961.58-19,643.70

Finding the Fourth Proportional to 30,393.20, 41,961.58 and 19,643.70

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Solution

The fourth proportional to 30,393.20, 41,961.58 and 19,643.70 is: 27,120.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,393.20 : 41,961.58 = 19,643.70 : x
  2. Step 2: Convert to fraction form
    30,393.20/41,961.58 = 19,643.70/x
  3. Step 3: Cross multiply
    30,393.20x = 41,961.58 × 19,643.70
  4. Step 4: Simplify right side
    30,393.20x = 824,280,689.05
  5. Step 5: Solve for x
    x = 824,280,689.05/30,393.20
  6. Step 6: Final answer
    x = 27,120.56

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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.