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Finding the Fourth Proportional to 17,813.16, 26,709.86 and 7,290.57

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Solution

The fourth proportional to 17,813.16, 26,709.86 and 7,290.57 is: 10,931.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,813.16 : 26,709.86 = 7,290.57 : x
  2. Step 2: Convert to fraction form
    17,813.16/26,709.86 = 7,290.57/x
  3. Step 3: Cross multiply
    17,813.16x = 26,709.86 × 7,290.57
  4. Step 4: Simplify right side
    17,813.16x = 194,730,067.57
  5. Step 5: Solve for x
    x = 194,730,067.57/17,813.16
  6. Step 6: Final answer
    x = 10,931.81

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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.