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Finding the Fourth Proportional to 17,348.80, 25,972.80 and 12,985.60

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Solution

The fourth proportional to 17,348.80, 25,972.80 and 12,985.60 is: 19,440.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,348.80 : 25,972.80 = 12,985.60 : x
  2. Step 2: Convert to fraction form
    17,348.80/25,972.80 = 12,985.60/x
  3. Step 3: Cross multiply
    17,348.80x = 25,972.80 × 12,985.60
  4. Step 4: Simplify right side
    17,348.80x = 337,272,391.68
  5. Step 5: Solve for x
    x = 337,272,391.68/17,348.80
  6. Step 6: Final answer
    x = 19,440.68

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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.