Home / 12,858.22-17,743.12-7,192.68

Finding the Fourth Proportional to 12,858.22, 17,743.12 and 7,192.68

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Solution

The fourth proportional to 12,858.22, 17,743.12 and 7,192.68 is: 9,925.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,858.22 : 17,743.12 = 7,192.68 : x
  2. Step 2: Convert to fraction form
    12,858.22/17,743.12 = 7,192.68/x
  3. Step 3: Cross multiply
    12,858.22x = 17,743.12 × 7,192.68
  4. Step 4: Simplify right side
    12,858.22x = 127,620,584.36
  5. Step 5: Solve for x
    x = 127,620,584.36/12,858.22
  6. Step 6: Final answer
    x = 9,925.21

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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.