Home / 18,427.12-25,429.51-10,469.78

Finding the Fourth Proportional to 18,427.12, 25,429.51 and 10,469.78

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Solution

The fourth proportional to 18,427.12, 25,429.51 and 10,469.78 is: 14,448.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,427.12 : 25,429.51 = 10,469.78 : x
  2. Step 2: Convert to fraction form
    18,427.12/25,429.51 = 10,469.78/x
  3. Step 3: Cross multiply
    18,427.12x = 25,429.51 × 10,469.78
  4. Step 4: Simplify right side
    18,427.12x = 266,241,375.21
  5. Step 5: Solve for x
    x = 266,241,375.21/18,427.12
  6. Step 6: Final answer
    x = 14,448.34

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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.