Home / 12,968.82-19,415.75-7,615.79

Finding the Fourth Proportional to 12,968.82, 19,415.75 and 7,615.79

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Solution

The fourth proportional to 12,968.82, 19,415.75 and 7,615.79 is: 11,401.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,968.82 : 19,415.75 = 7,615.79 : x
  2. Step 2: Convert to fraction form
    12,968.82/19,415.75 = 7,615.79/x
  3. Step 3: Cross multiply
    12,968.82x = 19,415.75 × 7,615.79
  4. Step 4: Simplify right side
    12,968.82x = 147,866,139.53
  5. Step 5: Solve for x
    x = 147,866,139.53/12,968.82
  6. Step 6: Final answer
    x = 11,401.66

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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.