Home / 30,998.90-42,778.91-16,852.05

Finding the Fourth Proportional to 30,998.90, 42,778.91 and 16,852.05

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Solution

The fourth proportional to 30,998.90, 42,778.91 and 16,852.05 is: 23,256.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,998.90 : 42,778.91 = 16,852.05 : x
  2. Step 2: Convert to fraction form
    30,998.90/42,778.91 = 16,852.05/x
  3. Step 3: Cross multiply
    30,998.90x = 42,778.91 × 16,852.05
  4. Step 4: Simplify right side
    30,998.90x = 720,912,246.01
  5. Step 5: Solve for x
    x = 720,912,246.01/30,998.90
  6. Step 6: Final answer
    x = 23,256.06

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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.