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Finding the Fourth Proportional to 17,965.12, 26,950.56 and 7,578.40

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Solution

The fourth proportional to 17,965.12, 26,950.56 and 7,578.40 is: 11,368.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,965.12 : 26,950.56 = 7,578.40 : x
  2. Step 2: Convert to fraction form
    17,965.12/26,950.56 = 7,578.40/x
  3. Step 3: Cross multiply
    17,965.12x = 26,950.56 × 7,578.40
  4. Step 4: Simplify right side
    17,965.12x = 204,242,123.90
  5. Step 5: Solve for x
    x = 204,242,123.90/17,965.12
  6. Step 6: Final answer
    x = 11,368.81

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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.