Home / 18,211.33-25,121.80-12,536.07

Finding the Fourth Proportional to 18,211.33, 25,121.80 and 12,536.07

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Solution

The fourth proportional to 18,211.33, 25,121.80 and 12,536.07 is: 17,293.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,211.33 : 25,121.80 = 12,536.07 : x
  2. Step 2: Convert to fraction form
    18,211.33/25,121.80 = 12,536.07/x
  3. Step 3: Cross multiply
    18,211.33x = 25,121.80 × 12,536.07
  4. Step 4: Simplify right side
    18,211.33x = 314,928,494.27
  5. Step 5: Solve for x
    x = 314,928,494.27/18,211.33
  6. Step 6: Final answer
    x = 17,293.00

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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.