Home / 20,200.08-27,880.20-11,819.28

Finding the Fourth Proportional to 20,200.08, 27,880.20 and 11,819.28

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Solution

The fourth proportional to 20,200.08, 27,880.20 and 11,819.28 is: 16,313.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,200.08 : 27,880.20 = 11,819.28 : x
  2. Step 2: Convert to fraction form
    20,200.08/27,880.20 = 11,819.28/x
  3. Step 3: Cross multiply
    20,200.08x = 27,880.20 × 11,819.28
  4. Step 4: Simplify right side
    20,200.08x = 329,523,890.26
  5. Step 5: Solve for x
    x = 329,523,890.26/20,200.08
  6. Step 6: Final answer
    x = 16,313.00

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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.