Home / 19,130.55-28,684.07-6,645.21

Finding the Fourth Proportional to 19,130.55, 28,684.07 and 6,645.21

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Solution

The fourth proportional to 19,130.55, 28,684.07 and 6,645.21 is: 9,963.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,130.55 : 28,684.07 = 6,645.21 : x
  2. Step 2: Convert to fraction form
    19,130.55/28,684.07 = 6,645.21/x
  3. Step 3: Cross multiply
    19,130.55x = 28,684.07 × 6,645.21
  4. Step 4: Simplify right side
    19,130.55x = 190,611,668.80
  5. Step 5: Solve for x
    x = 190,611,668.80/19,130.55
  6. Step 6: Final answer
    x = 9,963.73

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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.