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Finding the Fourth Proportional to 11,354.55, 15,669.48 and 6,318.98

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Solution

The fourth proportional to 11,354.55, 15,669.48 and 6,318.98 is: 8,720.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,354.55 : 15,669.48 = 6,318.98 : x
  2. Step 2: Convert to fraction form
    11,354.55/15,669.48 = 6,318.98/x
  3. Step 3: Cross multiply
    11,354.55x = 15,669.48 × 6,318.98
  4. Step 4: Simplify right side
    11,354.55x = 99,015,130.73
  5. Step 5: Solve for x
    x = 99,015,130.73/11,354.55
  6. Step 6: Final answer
    x = 8,720.30

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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.