Home / 30,172.55-45,258.60-9,112.55

Finding the Fourth Proportional to 30,172.55, 45,258.60 and 9,112.55

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Solution

The fourth proportional to 30,172.55, 45,258.60 and 9,112.55 is: 13,668.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,172.55 : 45,258.60 = 9,112.55 : x
  2. Step 2: Convert to fraction form
    30,172.55/45,258.60 = 9,112.55/x
  3. Step 3: Cross multiply
    30,172.55x = 45,258.60 × 9,112.55
  4. Step 4: Simplify right side
    30,172.55x = 412,421,255.43
  5. Step 5: Solve for x
    x = 412,421,255.43/30,172.55
  6. Step 6: Final answer
    x = 13,668.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.