Home / 20,316.90-28,035.79-11,362.67

Finding the Fourth Proportional to 20,316.90, 28,035.79 and 11,362.67

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Solution

The fourth proportional to 20,316.90, 28,035.79 and 11,362.67 is: 15,679.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,316.90 : 28,035.79 = 11,362.67 : x
  2. Step 2: Convert to fraction form
    20,316.90/28,035.79 = 11,362.67/x
  3. Step 3: Cross multiply
    20,316.90x = 28,035.79 × 11,362.67
  4. Step 4: Simplify right side
    20,316.90x = 318,561,289.78
  5. Step 5: Solve for x
    x = 318,561,289.78/20,316.90
  6. Step 6: Final answer
    x = 15,679.62

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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.