Home / 33,148.28-49,736.10-13,421.81

Finding the Fourth Proportional to 33,148.28, 49,736.10 and 13,421.81

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Solution

The fourth proportional to 33,148.28, 49,736.10 and 13,421.81 is: 20,138.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,148.28 : 49,736.10 = 13,421.81 : x
  2. Step 2: Convert to fraction form
    33,148.28/49,736.10 = 13,421.81/x
  3. Step 3: Cross multiply
    33,148.28x = 49,736.10 × 13,421.81
  4. Step 4: Simplify right side
    33,148.28x = 667,548,484.34
  5. Step 5: Solve for x
    x = 667,548,484.34/33,148.28
  6. Step 6: Final answer
    x = 20,138.25

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.