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Finding the Fourth Proportional to 11,405.55, 17,100.03 and 7,698.63

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Solution

The fourth proportional to 11,405.55, 17,100.03 and 7,698.63 is: 11,542.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,405.55 : 17,100.03 = 7,698.63 : x
  2. Step 2: Convert to fraction form
    11,405.55/17,100.03 = 7,698.63/x
  3. Step 3: Cross multiply
    11,405.55x = 17,100.03 × 7,698.63
  4. Step 4: Simplify right side
    11,405.55x = 131,646,803.96
  5. Step 5: Solve for x
    x = 131,646,803.96/11,405.55
  6. Step 6: Final answer
    x = 11,542.35

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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.