Home / 12,577.86-18,870.30-3,812.85

Finding the Fourth Proportional to 12,577.86, 18,870.30 and 3,812.85

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Solution

The fourth proportional to 12,577.86, 18,870.30 and 3,812.85 is: 5,720.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,577.86 : 18,870.30 = 3,812.85 : x
  2. Step 2: Convert to fraction form
    12,577.86/18,870.30 = 3,812.85/x
  3. Step 3: Cross multiply
    12,577.86x = 18,870.30 × 3,812.85
  4. Step 4: Simplify right side
    12,577.86x = 71,949,623.36
  5. Step 5: Solve for x
    x = 71,949,623.36/12,577.86
  6. Step 6: Final answer
    x = 5,720.34

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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.