Home / 12,636.36-18,955.44-3,870.14

Finding the Fourth Proportional to 12,636.36, 18,955.44 and 3,870.14

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Solution

The fourth proportional to 12,636.36, 18,955.44 and 3,870.14 is: 5,805.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,636.36 : 18,955.44 = 3,870.14 : x
  2. Step 2: Convert to fraction form
    12,636.36/18,955.44 = 3,870.14/x
  3. Step 3: Cross multiply
    12,636.36x = 18,955.44 × 3,870.14
  4. Step 4: Simplify right side
    12,636.36x = 73,360,206.56
  5. Step 5: Solve for x
    x = 73,360,206.56/12,636.36
  6. Step 6: Final answer
    x = 5,805.49

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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.