Home / 13,789.02-19,028.88-7,819.32

Finding the Fourth Proportional to 13,789.02, 19,028.88 and 7,819.32

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Solution

The fourth proportional to 13,789.02, 19,028.88 and 7,819.32 is: 10,790.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,789.02 : 19,028.88 = 7,819.32 : x
  2. Step 2: Convert to fraction form
    13,789.02/19,028.88 = 7,819.32/x
  3. Step 3: Cross multiply
    13,789.02x = 19,028.88 × 7,819.32
  4. Step 4: Simplify right side
    13,789.02x = 148,792,901.96
  5. Step 5: Solve for x
    x = 148,792,901.96/13,789.02
  6. Step 6: Final answer
    x = 10,790.68

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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.