Home / 18,357.18-25,323.89-11,980.81

Finding the Fourth Proportional to 18,357.18, 25,323.89 and 11,980.81

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Solution

The fourth proportional to 18,357.18, 25,323.89 and 11,980.81 is: 16,527.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,357.18 : 25,323.89 = 11,980.81 : x
  2. Step 2: Convert to fraction form
    18,357.18/25,323.89 = 11,980.81/x
  3. Step 3: Cross multiply
    18,357.18x = 25,323.89 × 11,980.81
  4. Step 4: Simplify right side
    18,357.18x = 303,400,753.69
  5. Step 5: Solve for x
    x = 303,400,753.69/18,357.18
  6. Step 6: Final answer
    x = 16,527.63

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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.