Home / 12,981.87-17,914.77-7,317.14

Finding the Fourth Proportional to 12,981.87, 17,914.77 and 7,317.14

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Solution

The fourth proportional to 12,981.87, 17,914.77 and 7,317.14 is: 10,097.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,981.87 : 17,914.77 = 7,317.14 : x
  2. Step 2: Convert to fraction form
    12,981.87/17,914.77 = 7,317.14/x
  3. Step 3: Cross multiply
    12,981.87x = 17,914.77 × 7,317.14
  4. Step 4: Simplify right side
    12,981.87x = 131,084,790.58
  5. Step 5: Solve for x
    x = 131,084,790.58/12,981.87
  6. Step 6: Final answer
    x = 10,097.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.