Home / 19,679.45-29,525.65-7,989.53

Finding the Fourth Proportional to 19,679.45, 29,525.65 and 7,989.53

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Solution

The fourth proportional to 19,679.45, 29,525.65 and 7,989.53 is: 11,986.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,679.45 : 29,525.65 = 7,989.53 : x
  2. Step 2: Convert to fraction form
    19,679.45/29,525.65 = 7,989.53/x
  3. Step 3: Cross multiply
    19,679.45x = 29,525.65 × 7,989.53
  4. Step 4: Simplify right side
    19,679.45x = 235,895,898.84
  5. Step 5: Solve for x
    x = 235,895,898.84/19,679.45
  6. Step 6: Final answer
    x = 11,986.92

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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.