Home / 13,819.30-19,074.36-7,851.22

Finding the Fourth Proportional to 13,819.30, 19,074.36 and 7,851.22

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Solution

The fourth proportional to 13,819.30, 19,074.36 and 7,851.22 is: 10,836.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,819.30 : 19,074.36 = 7,851.22 : x
  2. Step 2: Convert to fraction form
    13,819.30/19,074.36 = 7,851.22/x
  3. Step 3: Cross multiply
    13,819.30x = 19,074.36 × 7,851.22
  4. Step 4: Simplify right side
    13,819.30x = 149,756,996.72
  5. Step 5: Solve for x
    x = 149,756,996.72/13,819.30
  6. Step 6: Final answer
    x = 10,836.80

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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.