Home / 12,880.32-19,317.45-3,518.12

Finding the Fourth Proportional to 12,880.32, 19,317.45 and 3,518.12

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Solution

The fourth proportional to 12,880.32, 19,317.45 and 3,518.12 is: 5,276.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,880.32 : 19,317.45 = 3,518.12 : x
  2. Step 2: Convert to fraction form
    12,880.32/19,317.45 = 3,518.12/x
  3. Step 3: Cross multiply
    12,880.32x = 19,317.45 × 3,518.12
  4. Step 4: Simplify right side
    12,880.32x = 67,961,010.61
  5. Step 5: Solve for x
    x = 67,961,010.61/12,880.32
  6. Step 6: Final answer
    x = 5,276.34

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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.