Home / 11,981.88-17,946.65-9,878.25

Finding the Fourth Proportional to 11,981.88, 17,946.65 and 9,878.25

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Solution

The fourth proportional to 11,981.88, 17,946.65 and 9,878.25 is: 14,795.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,981.88 : 17,946.65 = 9,878.25 : x
  2. Step 2: Convert to fraction form
    11,981.88/17,946.65 = 9,878.25/x
  3. Step 3: Cross multiply
    11,981.88x = 17,946.65 × 9,878.25
  4. Step 4: Simplify right side
    11,981.88x = 177,281,445.97
  5. Step 5: Solve for x
    x = 177,281,445.97/11,981.88
  6. Step 6: Final answer
    x = 14,795.80

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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.