Home / 30,120.63-41,567.55-18,181.64

Finding the Fourth Proportional to 30,120.63, 41,567.55 and 18,181.64

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Solution

The fourth proportional to 30,120.63, 41,567.55 and 18,181.64 is: 25,091.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,120.63 : 41,567.55 = 18,181.64 : x
  2. Step 2: Convert to fraction form
    30,120.63/41,567.55 = 18,181.64/x
  3. Step 3: Cross multiply
    30,120.63x = 41,567.55 × 18,181.64
  4. Step 4: Simplify right side
    30,120.63x = 755,765,931.04
  5. Step 5: Solve for x
    x = 755,765,931.04/30,120.63
  6. Step 6: Final answer
    x = 25,091.31

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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.