Home / 20,914.63-28,861.18-11,354.31

Finding the Fourth Proportional to 20,914.63, 28,861.18 and 11,354.31

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Solution

The fourth proportional to 20,914.63, 28,861.18 and 11,354.31 is: 15,668.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,914.63 : 28,861.18 = 11,354.31 : x
  2. Step 2: Convert to fraction form
    20,914.63/28,861.18 = 11,354.31/x
  3. Step 3: Cross multiply
    20,914.63x = 28,861.18 × 11,354.31
  4. Step 4: Simplify right side
    20,914.63x = 327,698,756.30
  5. Step 5: Solve for x
    x = 327,698,756.30/20,914.63
  6. Step 6: Final answer
    x = 15,668.40

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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.