Home / 30,147.80-41,601-16,718.82

Finding the Fourth Proportional to 30,147.80, 41,601 and 16,718.82

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Solution

The fourth proportional to 30,147.80, 41,601 and 16,718.82 is: 23,070.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,147.80 : 41,601 = 16,718.82 : x
  2. Step 2: Convert to fraction form
    30,147.80/41,601 = 16,718.82/x
  3. Step 3: Cross multiply
    30,147.80x = 41,601 × 16,718.82
  4. Step 4: Simplify right side
    30,147.80x = 695,519,630.82
  5. Step 5: Solve for x
    x = 695,519,630.82/30,147.80
  6. Step 6: Final answer
    x = 23,070.33

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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.