Home / 30,418.72-41,977.40-16,990.17

Finding the Fourth Proportional to 30,418.72, 41,977.40 and 16,990.17

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Solution

The fourth proportional to 30,418.72, 41,977.40 and 16,990.17 is: 23,446.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,418.72 : 41,977.40 = 16,990.17 : x
  2. Step 2: Convert to fraction form
    30,418.72/41,977.40 = 16,990.17/x
  3. Step 3: Cross multiply
    30,418.72x = 41,977.40 × 16,990.17
  4. Step 4: Simplify right side
    30,418.72x = 713,203,077.21
  5. Step 5: Solve for x
    x = 713,203,077.21/30,418.72
  6. Step 6: Final answer
    x = 23,446.19

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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.