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Finding the Fourth Proportional to 18,054.31, 24,914.76 and 9,988.33

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Solution

The fourth proportional to 18,054.31, 24,914.76 and 9,988.33 is: 13,783.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,054.31 : 24,914.76 = 9,988.33 : x
  2. Step 2: Convert to fraction form
    18,054.31/24,914.76 = 9,988.33/x
  3. Step 3: Cross multiply
    18,054.31x = 24,914.76 × 9,988.33
  4. Step 4: Simplify right side
    18,054.31x = 248,856,844.75
  5. Step 5: Solve for x
    x = 248,856,844.75/18,054.31
  6. Step 6: Final answer
    x = 13,783.79

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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.