Home / 12,829.19-17,696.30-7,788.51

Finding the Fourth Proportional to 12,829.19, 17,696.30 and 7,788.51

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Solution

The fourth proportional to 12,829.19, 17,696.30 and 7,788.51 is: 10,743.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,829.19 : 17,696.30 = 7,788.51 : x
  2. Step 2: Convert to fraction form
    12,829.19/17,696.30 = 7,788.51/x
  3. Step 3: Cross multiply
    12,829.19x = 17,696.30 × 7,788.51
  4. Step 4: Simplify right side
    12,829.19x = 137,827,770.57
  5. Step 5: Solve for x
    x = 137,827,770.57/12,829.19
  6. Step 6: Final answer
    x = 10,743.30

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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.