Home / 20,618.18-30,930.29-7,467.47

Finding the Fourth Proportional to 20,618.18, 30,930.29 and 7,467.47

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Solution

The fourth proportional to 20,618.18, 30,930.29 and 7,467.47 is: 11,202.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,618.18 : 30,930.29 = 7,467.47 : x
  2. Step 2: Convert to fraction form
    20,618.18/30,930.29 = 7,467.47/x
  3. Step 3: Cross multiply
    20,618.18x = 30,930.29 × 7,467.47
  4. Step 4: Simplify right side
    20,618.18x = 230,971,012.67
  5. Step 5: Solve for x
    x = 230,971,012.67/20,618.18
  6. Step 6: Final answer
    x = 11,202.30

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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.