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Finding the Fourth Proportional to 17,165.70, 25,748.55 and 7,810.20

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Solution

The fourth proportional to 17,165.70, 25,748.55 and 7,810.20 is: 11,715.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,165.70 : 25,748.55 = 7,810.20 : x
  2. Step 2: Convert to fraction form
    17,165.70/25,748.55 = 7,810.20/x
  3. Step 3: Cross multiply
    17,165.70x = 25,748.55 × 7,810.20
  4. Step 4: Simplify right side
    17,165.70x = 201,101,325.21
  5. Step 5: Solve for x
    x = 201,101,325.21/17,165.70
  6. Step 6: Final answer
    x = 11,715.30

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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.