Home / 20,154.77-27,812.99-11,540.67

Finding the Fourth Proportional to 20,154.77, 27,812.99 and 11,540.67

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Solution

The fourth proportional to 20,154.77, 27,812.99 and 11,540.67 is: 15,925.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,154.77 : 27,812.99 = 11,540.67 : x
  2. Step 2: Convert to fraction form
    20,154.77/27,812.99 = 11,540.67/x
  3. Step 3: Cross multiply
    20,154.77x = 27,812.99 × 11,540.67
  4. Step 4: Simplify right side
    20,154.77x = 320,980,568.15
  5. Step 5: Solve for x
    x = 320,980,568.15/20,154.77
  6. Step 6: Final answer
    x = 15,925.78

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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.