Home / 20,941.43-28,898.83-11,509.79

Finding the Fourth Proportional to 20,941.43, 28,898.83 and 11,509.79

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Solution

The fourth proportional to 20,941.43, 28,898.83 and 11,509.79 is: 15,883.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,941.43 : 28,898.83 = 11,509.79 : x
  2. Step 2: Convert to fraction form
    20,941.43/28,898.83 = 11,509.79/x
  3. Step 3: Cross multiply
    20,941.43x = 28,898.83 × 11,509.79
  4. Step 4: Simplify right side
    20,941.43x = 332,619,464.55
  5. Step 5: Solve for x
    x = 332,619,464.55/20,941.43
  6. Step 6: Final answer
    x = 15,883.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.