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Finding the Fourth Proportional to 30,147.92, 41,604.12 and 16,721.22

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Solution

The fourth proportional to 30,147.92, 41,604.12 and 16,721.22 is: 23,075.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,147.92 : 41,604.12 = 16,721.22 : x
  2. Step 2: Convert to fraction form
    30,147.92/41,604.12 = 16,721.22/x
  3. Step 3: Cross multiply
    30,147.92x = 41,604.12 × 16,721.22
  4. Step 4: Simplify right side
    30,147.92x = 695,671,643.43
  5. Step 5: Solve for x
    x = 695,671,643.43/30,147.92
  6. Step 6: Final answer
    x = 23,075.28

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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.