Home / 11,880.16-17,818.32-3,981.52

Finding the Fourth Proportional to 11,880.16, 17,818.32 and 3,981.52

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Solution

The fourth proportional to 11,880.16, 17,818.32 and 3,981.52 is: 5,971.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,880.16 : 17,818.32 = 3,981.52 : x
  2. Step 2: Convert to fraction form
    11,880.16/17,818.32 = 3,981.52/x
  3. Step 3: Cross multiply
    11,880.16x = 17,818.32 × 3,981.52
  4. Step 4: Simplify right side
    11,880.16x = 70,943,997.45
  5. Step 5: Solve for x
    x = 70,943,997.45/11,880.16
  6. Step 6: Final answer
    x = 5,971.64

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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.