Home / 12,636.52-18,954.74-3,870.30

Finding the Fourth Proportional to 12,636.52, 18,954.74 and 3,870.30

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Solution

The fourth proportional to 12,636.52, 18,954.74 and 3,870.30 is: 5,805.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,636.52 : 18,954.74 = 3,870.30 : x
  2. Step 2: Convert to fraction form
    12,636.52/18,954.74 = 3,870.30/x
  3. Step 3: Cross multiply
    12,636.52x = 18,954.74 × 3,870.30
  4. Step 4: Simplify right side
    12,636.52x = 73,360,416.10
  5. Step 5: Solve for x
    x = 73,360,416.10/12,636.52
  6. Step 6: Final answer
    x = 5,805.43

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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.