Home / 20,662.47-30,995.75-6,618.96

Finding the Fourth Proportional to 20,662.47, 30,995.75 and 6,618.96

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Solution

The fourth proportional to 20,662.47, 30,995.75 and 6,618.96 is: 9,929.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,662.47 : 30,995.75 = 6,618.96 : x
  2. Step 2: Convert to fraction form
    20,662.47/30,995.75 = 6,618.96/x
  3. Step 3: Cross multiply
    20,662.47x = 30,995.75 × 6,618.96
  4. Step 4: Simplify right side
    20,662.47x = 205,159,629.42
  5. Step 5: Solve for x
    x = 205,159,629.42/20,662.47
  6. Step 6: Final answer
    x = 9,929.10

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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.