Home / 30,299.88-45,398.79-19,219.08

Finding the Fourth Proportional to 30,299.88, 45,398.79 and 19,219.08

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Solution

The fourth proportional to 30,299.88, 45,398.79 and 19,219.08 is: 28,796.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,299.88 : 45,398.79 = 19,219.08 : x
  2. Step 2: Convert to fraction form
    30,299.88/45,398.79 = 19,219.08/x
  3. Step 3: Cross multiply
    30,299.88x = 45,398.79 × 19,219.08
  4. Step 4: Simplify right side
    30,299.88x = 872,522,976.91
  5. Step 5: Solve for x
    x = 872,522,976.91/30,299.88
  6. Step 6: Final answer
    x = 28,796.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.