Home / 20,919.66-31,360.26-9,066

Finding the Fourth Proportional to 20,919.66, 31,360.26 and 9,066

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Solution

The fourth proportional to 20,919.66, 31,360.26 and 9,066 is: 13,590.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,919.66 : 31,360.26 = 9,066 : x
  2. Step 2: Convert to fraction form
    20,919.66/31,360.26 = 9,066/x
  3. Step 3: Cross multiply
    20,919.66x = 31,360.26 × 9,066
  4. Step 4: Simplify right side
    20,919.66x = 284,312,117.16
  5. Step 5: Solve for x
    x = 284,312,117.16/20,919.66
  6. Step 6: Final answer
    x = 13,590.67

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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.