Home / 18,356-25,331.28-9,972.68

Finding the Fourth Proportional to 18,356, 25,331.28 and 9,972.68

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Solution

The fourth proportional to 18,356, 25,331.28 and 9,972.68 is: 13,762.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,356 : 25,331.28 = 9,972.68 : x
  2. Step 2: Convert to fraction form
    18,356/25,331.28 = 9,972.68/x
  3. Step 3: Cross multiply
    18,356x = 25,331.28 × 9,972.68
  4. Step 4: Simplify right side
    18,356x = 252,620,749.43
  5. Step 5: Solve for x
    x = 252,620,749.43/18,356
  6. Step 6: Final answer
    x = 13,762.30

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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.