Home / 18,670.38-25,757.03-11,112.47

Finding the Fourth Proportional to 18,670.38, 25,757.03 and 11,112.47

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Solution

The fourth proportional to 18,670.38, 25,757.03 and 11,112.47 is: 15,330.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,670.38 : 25,757.03 = 11,112.47 : x
  2. Step 2: Convert to fraction form
    18,670.38/25,757.03 = 11,112.47/x
  3. Step 3: Cross multiply
    18,670.38x = 25,757.03 × 11,112.47
  4. Step 4: Simplify right side
    18,670.38x = 286,224,176.84
  5. Step 5: Solve for x
    x = 286,224,176.84/18,670.38
  6. Step 6: Final answer
    x = 15,330.39

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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.