Home / 19,010.68-28,515.66-5,159.80

Finding the Fourth Proportional to 19,010.68, 28,515.66 and 5,159.80

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Solution

The fourth proportional to 19,010.68, 28,515.66 and 5,159.80 is: 7,739.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,010.68 : 28,515.66 = 5,159.80 : x
  2. Step 2: Convert to fraction form
    19,010.68/28,515.66 = 5,159.80/x
  3. Step 3: Cross multiply
    19,010.68x = 28,515.66 × 5,159.80
  4. Step 4: Simplify right side
    19,010.68x = 147,135,102.47
  5. Step 5: Solve for x
    x = 147,135,102.47/19,010.68
  6. Step 6: Final answer
    x = 7,739.60

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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.