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Finding the Fourth Proportional to 11,813.55, 17,720.73 and 6,259.38

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Solution

The fourth proportional to 11,813.55, 17,720.73 and 6,259.38 is: 9,389.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,813.55 : 17,720.73 = 6,259.38 : x
  2. Step 2: Convert to fraction form
    11,813.55/17,720.73 = 6,259.38/x
  3. Step 3: Cross multiply
    11,813.55x = 17,720.73 × 6,259.38
  4. Step 4: Simplify right side
    11,813.55x = 110,920,782.95
  5. Step 5: Solve for x
    x = 110,920,782.95/11,813.55
  6. Step 6: Final answer
    x = 9,389.28

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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.