Home / 30,067.98-45,117.53-21,816.11

Finding the Fourth Proportional to 30,067.98, 45,117.53 and 21,816.11

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Solution

The fourth proportional to 30,067.98, 45,117.53 and 21,816.11 is: 32,735.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,067.98 : 45,117.53 = 21,816.11 : x
  2. Step 2: Convert to fraction form
    30,067.98/45,117.53 = 21,816.11/x
  3. Step 3: Cross multiply
    30,067.98x = 45,117.53 × 21,816.11
  4. Step 4: Simplify right side
    30,067.98x = 984,288,997.41
  5. Step 5: Solve for x
    x = 984,288,997.41/30,067.98
  6. Step 6: Final answer
    x = 32,735.45

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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.