Home / 13,549.78-20,298.37-9,985.43

Finding the Fourth Proportional to 13,549.78, 20,298.37 and 9,985.43

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Solution

The fourth proportional to 13,549.78, 20,298.37 and 9,985.43 is: 14,958.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,549.78 : 20,298.37 = 9,985.43 : x
  2. Step 2: Convert to fraction form
    13,549.78/20,298.37 = 9,985.43/x
  3. Step 3: Cross multiply
    13,549.78x = 20,298.37 × 9,985.43
  4. Step 4: Simplify right side
    13,549.78x = 202,687,952.75
  5. Step 5: Solve for x
    x = 202,687,952.75/13,549.78
  6. Step 6: Final answer
    x = 14,958.76

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.