Home / 20,167.69-30,251.81-7,688.38

Finding the Fourth Proportional to 20,167.69, 30,251.81 and 7,688.38

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Solution

The fourth proportional to 20,167.69, 30,251.81 and 7,688.38 is: 11,532.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,167.69 : 30,251.81 = 7,688.38 : x
  2. Step 2: Convert to fraction form
    20,167.69/30,251.81 = 7,688.38/x
  3. Step 3: Cross multiply
    20,167.69x = 30,251.81 × 7,688.38
  4. Step 4: Simplify right side
    20,167.69x = 232,587,410.97
  5. Step 5: Solve for x
    x = 232,587,410.97/20,167.69
  6. Step 6: Final answer
    x = 11,532.67

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1.5x scale

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.