Home / 18,675.23-25,768.81-11,121.33

Finding the Fourth Proportional to 18,675.23, 25,768.81 and 11,121.33

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Solution

The fourth proportional to 18,675.23, 25,768.81 and 11,121.33 is: 15,345.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,675.23 : 25,768.81 = 11,121.33 : x
  2. Step 2: Convert to fraction form
    18,675.23/25,768.81 = 11,121.33/x
  3. Step 3: Cross multiply
    18,675.23x = 25,768.81 × 11,121.33
  4. Step 4: Simplify right side
    18,675.23x = 286,583,411.91
  5. Step 5: Solve for x
    x = 286,583,411.91/18,675.23
  6. Step 6: Final answer
    x = 15,345.64

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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.