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Finding the Fourth Proportional to 11,889.44, 16,389.96 and 9,051.88

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Solution

The fourth proportional to 11,889.44, 16,389.96 and 9,051.88 is: 12,478.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,889.44 : 16,389.96 = 9,051.88 : x
  2. Step 2: Convert to fraction form
    11,889.44/16,389.96 = 9,051.88/x
  3. Step 3: Cross multiply
    11,889.44x = 16,389.96 × 9,051.88
  4. Step 4: Simplify right side
    11,889.44x = 148,359,869.18
  5. Step 5: Solve for x
    x = 148,359,869.18/11,889.44
  6. Step 6: Final answer
    x = 12,478.29

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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.