Home / 19,189.95-28,782.92-5,151.48

Finding the Fourth Proportional to 19,189.95, 28,782.92 and 5,151.48

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Solution

The fourth proportional to 19,189.95, 28,782.92 and 5,151.48 is: 7,726.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,189.95 : 28,782.92 = 5,151.48 : x
  2. Step 2: Convert to fraction form
    19,189.95/28,782.92 = 5,151.48/x
  3. Step 3: Cross multiply
    19,189.95x = 28,782.92 × 5,151.48
  4. Step 4: Simplify right side
    19,189.95x = 148,274,636.72
  5. Step 5: Solve for x
    x = 148,274,636.72/19,189.95
  6. Step 6: Final answer
    x = 7,726.68

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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.