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Finding the Fourth Proportional to 30,395.67, 41,945.67 and 16,970.25

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Solution

The fourth proportional to 30,395.67, 41,945.67 and 16,970.25 is: 23,418.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,395.67 : 41,945.67 = 16,970.25 : x
  2. Step 2: Convert to fraction form
    30,395.67/41,945.67 = 16,970.25/x
  3. Step 3: Cross multiply
    30,395.67x = 41,945.67 × 16,970.25
  4. Step 4: Simplify right side
    30,395.67x = 711,828,506.32
  5. Step 5: Solve for x
    x = 711,828,506.32/30,395.67
  6. Step 6: Final answer
    x = 23,418.75

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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.