Home / 12,968.85-19,422.09-7,405.33

Finding the Fourth Proportional to 12,968.85, 19,422.09 and 7,405.33

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Solution

The fourth proportional to 12,968.85, 19,422.09 and 7,405.33 is: 11,090.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,968.85 : 19,422.09 = 7,405.33 : x
  2. Step 2: Convert to fraction form
    12,968.85/19,422.09 = 7,405.33/x
  3. Step 3: Cross multiply
    12,968.85x = 19,422.09 × 7,405.33
  4. Step 4: Simplify right side
    12,968.85x = 143,826,985.74
  5. Step 5: Solve for x
    x = 143,826,985.74/12,968.85
  6. Step 6: Final answer
    x = 11,090.19

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1.5x scale

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.