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Finding the Fourth Proportional to 11,670.68, 17,474.70 and 7,279.40

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Solution

The fourth proportional to 11,670.68, 17,474.70 and 7,279.40 is: 10,899.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,670.68 : 17,474.70 = 7,279.40 : x
  2. Step 2: Convert to fraction form
    11,670.68/17,474.70 = 7,279.40/x
  3. Step 3: Cross multiply
    11,670.68x = 17,474.70 × 7,279.40
  4. Step 4: Simplify right side
    11,670.68x = 127,205,331.18
  5. Step 5: Solve for x
    x = 127,205,331.18/11,670.68
  6. Step 6: Final answer
    x = 10,899.56

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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.