Home / 18,319.21-27,460.35-7,221.60

Finding the Fourth Proportional to 18,319.21, 27,460.35 and 7,221.60

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Solution

The fourth proportional to 18,319.21, 27,460.35 and 7,221.60 is: 10,825.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,319.21 : 27,460.35 = 7,221.60 : x
  2. Step 2: Convert to fraction form
    18,319.21/27,460.35 = 7,221.60/x
  3. Step 3: Cross multiply
    18,319.21x = 27,460.35 × 7,221.60
  4. Step 4: Simplify right side
    18,319.21x = 198,307,663.56
  5. Step 5: Solve for x
    x = 198,307,663.56/18,319.21
  6. Step 6: Final answer
    x = 10,825.12

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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.