Home / 30,238.30-41,728.63-16,810.78

Finding the Fourth Proportional to 30,238.30, 41,728.63 and 16,810.78

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Solution

The fourth proportional to 30,238.30, 41,728.63 and 16,810.78 is: 23,198.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,238.30 : 41,728.63 = 16,810.78 : x
  2. Step 2: Convert to fraction form
    30,238.30/41,728.63 = 16,810.78/x
  3. Step 3: Cross multiply
    30,238.30x = 41,728.63 × 16,810.78
  4. Step 4: Simplify right side
    30,238.30x = 701,490,818.63
  5. Step 5: Solve for x
    x = 701,490,818.63/30,238.30
  6. Step 6: Final answer
    x = 23,198.75

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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.