Home / 12,696.26-17,518.75-7,977.18

Finding the Fourth Proportional to 12,696.26, 17,518.75 and 7,977.18

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Solution

The fourth proportional to 12,696.26, 17,518.75 and 7,977.18 is: 11,007.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,696.26 : 17,518.75 = 7,977.18 : x
  2. Step 2: Convert to fraction form
    12,696.26/17,518.75 = 7,977.18/x
  3. Step 3: Cross multiply
    12,696.26x = 17,518.75 × 7,977.18
  4. Step 4: Simplify right side
    12,696.26x = 139,750,222.13
  5. Step 5: Solve for x
    x = 139,750,222.13/12,696.26
  6. Step 6: Final answer
    x = 11,007.20

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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.