Home / 18,212.47-25,131.36-13,435.01

Finding the Fourth Proportional to 18,212.47, 25,131.36 and 13,435.01

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Solution

The fourth proportional to 18,212.47, 25,131.36 and 13,435.01 is: 18,538.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,212.47 : 25,131.36 = 13,435.01 : x
  2. Step 2: Convert to fraction form
    18,212.47/25,131.36 = 13,435.01/x
  3. Step 3: Cross multiply
    18,212.47x = 25,131.36 × 13,435.01
  4. Step 4: Simplify right side
    18,212.47x = 337,640,233.24
  5. Step 5: Solve for x
    x = 337,640,233.24/18,212.47
  6. Step 6: Final answer
    x = 18,538.96

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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.