Home / 30,419.07-41,977.87-16,990.51

Finding the Fourth Proportional to 30,419.07, 41,977.87 and 16,990.51

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Solution

The fourth proportional to 30,419.07, 41,977.87 and 16,990.51 is: 23,446.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,419.07 : 41,977.87 = 16,990.51 : x
  2. Step 2: Convert to fraction form
    30,419.07/41,977.87 = 16,990.51/x
  3. Step 3: Cross multiply
    30,419.07x = 41,977.87 × 16,990.51
  4. Step 4: Simplify right side
    30,419.07x = 713,225,377.54
  5. Step 5: Solve for x
    x = 713,225,377.54/30,419.07
  6. Step 6: Final answer
    x = 23,446.66

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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.