Home / 18,357.12-25,331.76-10,399.68

Finding the Fourth Proportional to 18,357.12, 25,331.76 and 10,399.68

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Solution

The fourth proportional to 18,357.12, 25,331.76 and 10,399.68 is: 14,350.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,357.12 : 25,331.76 = 10,399.68 : x
  2. Step 2: Convert to fraction form
    18,357.12/25,331.76 = 10,399.68/x
  3. Step 3: Cross multiply
    18,357.12x = 25,331.76 × 10,399.68
  4. Step 4: Simplify right side
    18,357.12x = 263,442,197.84
  5. Step 5: Solve for x
    x = 263,442,197.84/18,357.12
  6. Step 6: Final answer
    x = 14,350.95

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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.