Home / 28,613.16-42,938.78-11,759.99

Finding the Fourth Proportional to 28,613.16, 42,938.78 and 11,759.99

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Solution

The fourth proportional to 28,613.16, 42,938.78 and 11,759.99 is: 17,647.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,613.16 : 42,938.78 = 11,759.99 : x
  2. Step 2: Convert to fraction form
    28,613.16/42,938.78 = 11,759.99/x
  3. Step 3: Cross multiply
    28,613.16x = 42,938.78 × 11,759.99
  4. Step 4: Simplify right side
    28,613.16x = 504,959,516.07
  5. Step 5: Solve for x
    x = 504,959,516.07/28,613.16
  6. Step 6: Final answer
    x = 17,647.81

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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.