Home / 18,203.06-25,128.43-13,495.55

Finding the Fourth Proportional to 18,203.06, 25,128.43 and 13,495.55

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Solution

The fourth proportional to 18,203.06, 25,128.43 and 13,495.55 is: 18,629.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,203.06 : 25,128.43 = 13,495.55 : x
  2. Step 2: Convert to fraction form
    18,203.06/25,128.43 = 13,495.55/x
  3. Step 3: Cross multiply
    18,203.06x = 25,128.43 × 13,495.55
  4. Step 4: Simplify right side
    18,203.06x = 339,121,824.11
  5. Step 5: Solve for x
    x = 339,121,824.11/18,203.06
  6. Step 6: Final answer
    x = 18,629.93

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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.