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Finding the Fourth Proportional to 28,512, 39,346.56 and 17,334

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Solution

The fourth proportional to 28,512, 39,346.56 and 17,334 is: 23,920.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,512 : 39,346.56 = 17,334 : x
  2. Step 2: Convert to fraction form
    28,512/39,346.56 = 17,334/x
  3. Step 3: Cross multiply
    28,512x = 39,346.56 × 17,334
  4. Step 4: Simplify right side
    28,512x = 682,033,271.04
  5. Step 5: Solve for x
    x = 682,033,271.04/28,512
  6. Step 6: Final answer
    x = 23,920.92

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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.