Home / 18,759.74-28,143.66-5,613.26

Finding the Fourth Proportional to 18,759.74, 28,143.66 and 5,613.26

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Solution

The fourth proportional to 18,759.74, 28,143.66 and 5,613.26 is: 8,421.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,759.74 : 28,143.66 = 5,613.26 : x
  2. Step 2: Convert to fraction form
    18,759.74/28,143.66 = 5,613.26/x
  3. Step 3: Cross multiply
    18,759.74x = 28,143.66 × 5,613.26
  4. Step 4: Simplify right side
    18,759.74x = 157,977,680.93
  5. Step 5: Solve for x
    x = 157,977,680.93/18,759.74
  6. Step 6: Final answer
    x = 8,421.10

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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.