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Finding the Fourth Proportional to 18,353.40, 25,326.94 and 9,969.72

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Solution

The fourth proportional to 18,353.40, 25,326.94 and 9,969.72 is: 13,757.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,353.40 : 25,326.94 = 9,969.72 : x
  2. Step 2: Convert to fraction form
    18,353.40/25,326.94 = 9,969.72/x
  3. Step 3: Cross multiply
    18,353.40x = 25,326.94 × 9,969.72
  4. Step 4: Simplify right side
    18,353.40x = 252,502,500.26
  5. Step 5: Solve for x
    x = 252,502,500.26/18,353.40
  6. Step 6: Final answer
    x = 13,757.81

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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.