Home / 20,409.24-30,614.56-5,618.12

Finding the Fourth Proportional to 20,409.24, 30,614.56 and 5,618.12

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Solution

The fourth proportional to 20,409.24, 30,614.56 and 5,618.12 is: 8,427.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,409.24 : 30,614.56 = 5,618.12 : x
  2. Step 2: Convert to fraction form
    20,409.24/30,614.56 = 5,618.12/x
  3. Step 3: Cross multiply
    20,409.24x = 30,614.56 × 5,618.12
  4. Step 4: Simplify right side
    20,409.24x = 171,996,271.83
  5. Step 5: Solve for x
    x = 171,996,271.83/20,409.24
  6. Step 6: Final answer
    x = 8,427.37

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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.