Home / 19,908.45-29,859.41-7,425.21

Finding the Fourth Proportional to 19,908.45, 29,859.41 and 7,425.21

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Solution

The fourth proportional to 19,908.45, 29,859.41 and 7,425.21 is: 11,136.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,908.45 : 29,859.41 = 7,425.21 : x
  2. Step 2: Convert to fraction form
    19,908.45/29,859.41 = 7,425.21/x
  3. Step 3: Cross multiply
    19,908.45x = 29,859.41 × 7,425.21
  4. Step 4: Simplify right side
    19,908.45x = 221,712,352.60
  5. Step 5: Solve for x
    x = 221,712,352.60/19,908.45
  6. Step 6: Final answer
    x = 11,136.60

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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.