Home / 19,141.40-28,720.48-7,450.58

Finding the Fourth Proportional to 19,141.40, 28,720.48 and 7,450.58

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Solution

The fourth proportional to 19,141.40, 28,720.48 and 7,450.58 is: 11,179.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,141.40 : 28,720.48 = 7,450.58 : x
  2. Step 2: Convert to fraction form
    19,141.40/28,720.48 = 7,450.58/x
  3. Step 3: Cross multiply
    19,141.40x = 28,720.48 × 7,450.58
  4. Step 4: Simplify right side
    19,141.40x = 213,984,233.88
  5. Step 5: Solve for x
    x = 213,984,233.88/19,141.40
  6. Step 6: Final answer
    x = 11,179.13

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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.