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Finding the Fourth Proportional to 30,386.90, 41,936.02 and 16,960.77

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Solution

The fourth proportional to 30,386.90, 41,936.02 and 16,960.77 is: 23,407.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,386.90 : 41,936.02 = 16,960.77 : x
  2. Step 2: Convert to fraction form
    30,386.90/41,936.02 = 16,960.77/x
  3. Step 3: Cross multiply
    30,386.90x = 41,936.02 × 16,960.77
  4. Step 4: Simplify right side
    30,386.90x = 711,267,147.53
  5. Step 5: Solve for x
    x = 711,267,147.53/30,386.90
  6. Step 6: Final answer
    x = 23,407.04

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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.