Home / 11,905.95-16,381.92-9,773.64

Finding the Fourth Proportional to 11,905.95, 16,381.92 and 9,773.64

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Solution

The fourth proportional to 11,905.95, 16,381.92 and 9,773.64 is: 13,447.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,905.95 : 16,381.92 = 9,773.64 : x
  2. Step 2: Convert to fraction form
    11,905.95/16,381.92 = 9,773.64/x
  3. Step 3: Cross multiply
    11,905.95x = 16,381.92 × 9,773.64
  4. Step 4: Simplify right side
    11,905.95x = 160,110,988.59
  5. Step 5: Solve for x
    x = 160,110,988.59/11,905.95
  6. Step 6: Final answer
    x = 13,447.98

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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.