Home / 30,419.84-41,976.64-16,989.92

Finding the Fourth Proportional to 30,419.84, 41,976.64 and 16,989.92

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Solution

The fourth proportional to 30,419.84, 41,976.64 and 16,989.92 is: 23,444.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,419.84 : 41,976.64 = 16,989.92 : x
  2. Step 2: Convert to fraction form
    30,419.84/41,976.64 = 16,989.92/x
  3. Step 3: Cross multiply
    30,419.84x = 41,976.64 × 16,989.92
  4. Step 4: Simplify right side
    30,419.84x = 713,179,755.47
  5. Step 5: Solve for x
    x = 713,179,755.47/30,419.84
  6. Step 6: Final answer
    x = 23,444.56

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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.