Home / 18,771.12-25,897.56-11,691.68

Finding the Fourth Proportional to 18,771.12, 25,897.56 and 11,691.68

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Solution

The fourth proportional to 18,771.12, 25,897.56 and 11,691.68 is: 16,130.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,771.12 : 25,897.56 = 11,691.68 : x
  2. Step 2: Convert to fraction form
    18,771.12/25,897.56 = 11,691.68/x
  3. Step 3: Cross multiply
    18,771.12x = 25,897.56 × 11,691.68
  4. Step 4: Simplify right side
    18,771.12x = 302,785,984.30
  5. Step 5: Solve for x
    x = 302,785,984.30/18,771.12
  6. Step 6: Final answer
    x = 16,130.42

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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.