Home / 30,906.01-42,644.60-18,161.27

Finding the Fourth Proportional to 30,906.01, 42,644.60 and 18,161.27

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Solution

The fourth proportional to 30,906.01, 42,644.60 and 18,161.27 is: 25,059.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,906.01 : 42,644.60 = 18,161.27 : x
  2. Step 2: Convert to fraction form
    30,906.01/42,644.60 = 18,161.27/x
  3. Step 3: Cross multiply
    30,906.01x = 42,644.60 × 18,161.27
  4. Step 4: Simplify right side
    30,906.01x = 774,480,094.64
  5. Step 5: Solve for x
    x = 774,480,094.64/30,906.01
  6. Step 6: Final answer
    x = 25,059.21

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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.