Home / 20,949.21-31,386.87-11,066.67

Finding the Fourth Proportional to 20,949.21, 31,386.87 and 11,066.67

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Solution

The fourth proportional to 20,949.21, 31,386.87 and 11,066.67 is: 16,580.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,949.21 : 31,386.87 = 11,066.67 : x
  2. Step 2: Convert to fraction form
    20,949.21/31,386.87 = 11,066.67/x
  3. Step 3: Cross multiply
    20,949.21x = 31,386.87 × 11,066.67
  4. Step 4: Simplify right side
    20,949.21x = 347,348,132.62
  5. Step 5: Solve for x
    x = 347,348,132.62/20,949.21
  6. Step 6: Final answer
    x = 16,580.49

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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.