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Finding the Fourth Proportional to 11,493.59, 15,860.34 and 6,389.37

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Solution

The fourth proportional to 11,493.59, 15,860.34 and 6,389.37 is: 8,816.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,493.59 : 15,860.34 = 6,389.37 : x
  2. Step 2: Convert to fraction form
    11,493.59/15,860.34 = 6,389.37/x
  3. Step 3: Cross multiply
    11,493.59x = 15,860.34 × 6,389.37
  4. Step 4: Simplify right side
    11,493.59x = 101,337,580.59
  5. Step 5: Solve for x
    x = 101,337,580.59/11,493.59
  6. Step 6: Final answer
    x = 8,816.88

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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.