Home / 30,976.24-42,722.07-19,018.21

Finding the Fourth Proportional to 30,976.24, 42,722.07 and 19,018.21

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Solution

The fourth proportional to 30,976.24, 42,722.07 and 19,018.21 is: 26,229.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,976.24 : 42,722.07 = 19,018.21 : x
  2. Step 2: Convert to fraction form
    30,976.24/42,722.07 = 19,018.21/x
  3. Step 3: Cross multiply
    30,976.24x = 42,722.07 × 19,018.21
  4. Step 4: Simplify right side
    30,976.24x = 812,497,298.89
  5. Step 5: Solve for x
    x = 812,497,298.89/30,976.24
  6. Step 6: Final answer
    x = 26,229.69

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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.