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Finding the Fourth Proportional to 17,152.76, 25,728.70 and 7,918.76

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Solution

The fourth proportional to 17,152.76, 25,728.70 and 7,918.76 is: 11,877.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,152.76 : 25,728.70 = 7,918.76 : x
  2. Step 2: Convert to fraction form
    17,152.76/25,728.70 = 7,918.76/x
  3. Step 3: Cross multiply
    17,152.76x = 25,728.70 × 7,918.76
  4. Step 4: Simplify right side
    17,152.76x = 203,739,400.41
  5. Step 5: Solve for x
    x = 203,739,400.41/17,152.76
  6. Step 6: Final answer
    x = 11,877.94

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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.