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Finding the Fourth Proportional to 17,153.79, 25,715.11 and 7,788.76

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Solution

The fourth proportional to 17,153.79, 25,715.11 and 7,788.76 is: 11,676.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,153.79 : 25,715.11 = 7,788.76 : x
  2. Step 2: Convert to fraction form
    17,153.79/25,715.11 = 7,788.76/x
  3. Step 3: Cross multiply
    17,153.79x = 25,715.11 × 7,788.76
  4. Step 4: Simplify right side
    17,153.79x = 200,288,736.40
  5. Step 5: Solve for x
    x = 200,288,736.40/17,153.79
  6. Step 6: Final answer
    x = 11,676.06

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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.