Home / 30,968.18-42,736.13-16,821.03

Finding the Fourth Proportional to 30,968.18, 42,736.13 and 16,821.03

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Solution

The fourth proportional to 30,968.18, 42,736.13 and 16,821.03 is: 23,213.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,968.18 : 42,736.13 = 16,821.03 : x
  2. Step 2: Convert to fraction form
    30,968.18/42,736.13 = 16,821.03/x
  3. Step 3: Cross multiply
    30,968.18x = 42,736.13 × 16,821.03
  4. Step 4: Simplify right side
    30,968.18x = 718,865,550.77
  5. Step 5: Solve for x
    x = 718,865,550.77/30,968.18
  6. Step 6: Final answer
    x = 23,213.04

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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.