Home / 12,765.03-19,147.58-3,880.45

Finding the Fourth Proportional to 12,765.03, 19,147.58 and 3,880.45

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Solution

The fourth proportional to 12,765.03, 19,147.58 and 3,880.45 is: 5,820.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,765.03 : 19,147.58 = 3,880.45 : x
  2. Step 2: Convert to fraction form
    12,765.03/19,147.58 = 3,880.45/x
  3. Step 3: Cross multiply
    12,765.03x = 19,147.58 × 3,880.45
  4. Step 4: Simplify right side
    12,765.03x = 74,301,226.81
  5. Step 5: Solve for x
    x = 74,301,226.81/12,765.03
  6. Step 6: Final answer
    x = 5,820.69

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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.