Home / 20,406.24-30,580.20-11,623.02

Finding the Fourth Proportional to 20,406.24, 30,580.20 and 11,623.02

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Solution

The fourth proportional to 20,406.24, 30,580.20 and 11,623.02 is: 17,417.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,406.24 : 30,580.20 = 11,623.02 : x
  2. Step 2: Convert to fraction form
    20,406.24/30,580.20 = 11,623.02/x
  3. Step 3: Cross multiply
    20,406.24x = 30,580.20 × 11,623.02
  4. Step 4: Simplify right side
    20,406.24x = 355,434,276.20
  5. Step 5: Solve for x
    x = 355,434,276.20/20,406.24
  6. Step 6: Final answer
    x = 17,417.92

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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.