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Finding the Fourth Proportional to 30,305.88, 41,810.52 and 18,970.68

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Solution

The fourth proportional to 30,305.88, 41,810.52 and 18,970.68 is: 26,172.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,305.88 : 41,810.52 = 18,970.68 : x
  2. Step 2: Convert to fraction form
    30,305.88/41,810.52 = 18,970.68/x
  3. Step 3: Cross multiply
    30,305.88x = 41,810.52 × 18,970.68
  4. Step 4: Simplify right side
    30,305.88x = 793,173,995.55
  5. Step 5: Solve for x
    x = 793,173,995.55/30,305.88
  6. Step 6: Final answer
    x = 26,172.28

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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.