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Finding the Fourth Proportional to 10,670.88, 14,729.84 and 8,396.32

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Solution

The fourth proportional to 10,670.88, 14,729.84 and 8,396.32 is: 11,590.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,670.88 : 14,729.84 = 8,396.32 : x
  2. Step 2: Convert to fraction form
    10,670.88/14,729.84 = 8,396.32/x
  3. Step 3: Cross multiply
    10,670.88x = 14,729.84 × 8,396.32
  4. Step 4: Simplify right side
    10,670.88x = 123,676,450.19
  5. Step 5: Solve for x
    x = 123,676,450.19/10,670.88
  6. Step 6: Final answer
    x = 11,590.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.