Home / 18,928.58-26,121.09-10,431.49

Finding the Fourth Proportional to 18,928.58, 26,121.09 and 10,431.49

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Solution

The fourth proportional to 18,928.58, 26,121.09 and 10,431.49 is: 14,395.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,928.58 : 26,121.09 = 10,431.49 : x
  2. Step 2: Convert to fraction form
    18,928.58/26,121.09 = 10,431.49/x
  3. Step 3: Cross multiply
    18,928.58x = 26,121.09 × 10,431.49
  4. Step 4: Simplify right side
    18,928.58x = 272,481,889.12
  5. Step 5: Solve for x
    x = 272,481,889.12/18,928.58
  6. Step 6: Final answer
    x = 14,395.26

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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.