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Finding the Fourth Proportional to 11,889.60, 17,914.80 and 9,854.88

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Solution

The fourth proportional to 11,889.60, 17,914.80 and 9,854.88 is: 14,848.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,889.60 : 17,914.80 = 9,854.88 : x
  2. Step 2: Convert to fraction form
    11,889.60/17,914.80 = 9,854.88/x
  3. Step 3: Cross multiply
    11,889.60x = 17,914.80 × 9,854.88
  4. Step 4: Simplify right side
    11,889.60x = 176,548,204.22
  5. Step 5: Solve for x
    x = 176,548,204.22/11,889.60
  6. Step 6: Final answer
    x = 14,848.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.