Home / 30,411.84-41,969.20-16,982.60

Finding the Fourth Proportional to 30,411.84, 41,969.20 and 16,982.60

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Solution

The fourth proportional to 30,411.84, 41,969.20 and 16,982.60 is: 23,436.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,411.84 : 41,969.20 = 16,982.60 : x
  2. Step 2: Convert to fraction form
    30,411.84/41,969.20 = 16,982.60/x
  3. Step 3: Cross multiply
    30,411.84x = 41,969.20 × 16,982.60
  4. Step 4: Simplify right side
    30,411.84x = 712,746,135.92
  5. Step 5: Solve for x
    x = 712,746,135.92/30,411.84
  6. Step 6: Final answer
    x = 23,436.47

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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.