Home / 30,968.19-42,735.92-16,820.91

Finding the Fourth Proportional to 30,968.19, 42,735.92 and 16,820.91

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Solution

The fourth proportional to 30,968.19, 42,735.92 and 16,820.91 is: 23,212.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,968.19 : 42,735.92 = 16,820.91 : x
  2. Step 2: Convert to fraction form
    30,968.19/42,735.92 = 16,820.91/x
  3. Step 3: Cross multiply
    30,968.19x = 42,735.92 × 16,820.91
  4. Step 4: Simplify right side
    30,968.19x = 718,856,979.98
  5. Step 5: Solve for x
    x = 718,856,979.98/30,968.19
  6. Step 6: Final answer
    x = 23,212.75

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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.