Home / 30,481.08-42,070.46-18,548.25

Finding the Fourth Proportional to 30,481.08, 42,070.46 and 18,548.25

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Solution

The fourth proportional to 30,481.08, 42,070.46 and 18,548.25 is: 25,600.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,481.08 : 42,070.46 = 18,548.25 : x
  2. Step 2: Convert to fraction form
    30,481.08/42,070.46 = 18,548.25/x
  3. Step 3: Cross multiply
    30,481.08x = 42,070.46 × 18,548.25
  4. Step 4: Simplify right side
    30,481.08x = 780,333,409.70
  5. Step 5: Solve for x
    x = 780,333,409.70/30,481.08
  6. Step 6: Final answer
    x = 25,600.58

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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.