Home / 28,505.07-39,318.39-17,166.78

Finding the Fourth Proportional to 28,505.07, 39,318.39 and 17,166.78

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Solution

The fourth proportional to 28,505.07, 39,318.39 and 17,166.78 is: 23,678.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,505.07 : 39,318.39 = 17,166.78 : x
  2. Step 2: Convert to fraction form
    28,505.07/39,318.39 = 17,166.78/x
  3. Step 3: Cross multiply
    28,505.07x = 39,318.39 × 17,166.78
  4. Step 4: Simplify right side
    28,505.07x = 674,970,151.08
  5. Step 5: Solve for x
    x = 674,970,151.08/28,505.07
  6. Step 6: Final answer
    x = 23,678.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.