Home / 18,205.66-25,123.41-10,139.26

Finding the Fourth Proportional to 18,205.66, 25,123.41 and 10,139.26

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Solution

The fourth proportional to 18,205.66, 25,123.41 and 10,139.26 is: 13,991.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,205.66 : 25,123.41 = 10,139.26 : x
  2. Step 2: Convert to fraction form
    18,205.66/25,123.41 = 10,139.26/x
  3. Step 3: Cross multiply
    18,205.66x = 25,123.41 × 10,139.26
  4. Step 4: Simplify right side
    18,205.66x = 254,732,786.08
  5. Step 5: Solve for x
    x = 254,732,786.08/18,205.66
  6. Step 6: Final answer
    x = 13,991.96

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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.