Home / 20,409.56-30,605.11-7,262.28

Finding the Fourth Proportional to 20,409.56, 30,605.11 and 7,262.28

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Solution

The fourth proportional to 20,409.56, 30,605.11 and 7,262.28 is: 10,890.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,409.56 : 30,605.11 = 7,262.28 : x
  2. Step 2: Convert to fraction form
    20,409.56/30,605.11 = 7,262.28/x
  3. Step 3: Cross multiply
    20,409.56x = 30,605.11 × 7,262.28
  4. Step 4: Simplify right side
    20,409.56x = 222,262,860.10
  5. Step 5: Solve for x
    x = 222,262,860.10/20,409.56
  6. Step 6: Final answer
    x = 10,890.13

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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.