Home / 12,639.58-18,959.36-3,873.35

Finding the Fourth Proportional to 12,639.58, 18,959.36 and 3,873.35

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Solution

The fourth proportional to 12,639.58, 18,959.36 and 3,873.35 is: 5,810.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,639.58 : 18,959.36 = 3,873.35 : x
  2. Step 2: Convert to fraction form
    12,639.58/18,959.36 = 3,873.35/x
  3. Step 3: Cross multiply
    12,639.58x = 18,959.36 × 3,873.35
  4. Step 4: Simplify right side
    12,639.58x = 73,436,294.14
  5. Step 5: Solve for x
    x = 73,436,294.14/12,639.58
  6. Step 6: Final answer
    x = 5,810.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.