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Finding the Fourth Proportional to 28,332, 39,107.88 and 17,154

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Solution

The fourth proportional to 28,332, 39,107.88 and 17,154 is: 23,678.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,332 : 39,107.88 = 17,154 : x
  2. Step 2: Convert to fraction form
    28,332/39,107.88 = 17,154/x
  3. Step 3: Cross multiply
    28,332x = 39,107.88 × 17,154
  4. Step 4: Simplify right side
    28,332x = 670,856,573.52
  5. Step 5: Solve for x
    x = 670,856,573.52/28,332
  6. Step 6: Final answer
    x = 23,678.41

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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.