Home / 18,428.09-25,431.36-10,469.84

Finding the Fourth Proportional to 18,428.09, 25,431.36 and 10,469.84

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Solution

The fourth proportional to 18,428.09, 25,431.36 and 10,469.84 is: 14,448.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,428.09 : 25,431.36 = 10,469.84 : x
  2. Step 2: Convert to fraction form
    18,428.09/25,431.36 = 10,469.84/x
  3. Step 3: Cross multiply
    18,428.09x = 25,431.36 × 10,469.84
  4. Step 4: Simplify right side
    18,428.09x = 266,262,270.18
  5. Step 5: Solve for x
    x = 266,262,270.18/18,428.09
  6. Step 6: Final answer
    x = 14,448.72

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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.