Home / 20,583.13-28,404.66-11,151.67

Finding the Fourth Proportional to 20,583.13, 28,404.66 and 11,151.67

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Solution

The fourth proportional to 20,583.13, 28,404.66 and 11,151.67 is: 15,389.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,583.13 : 28,404.66 = 11,151.67 : x
  2. Step 2: Convert to fraction form
    20,583.13/28,404.66 = 11,151.67/x
  3. Step 3: Cross multiply
    20,583.13x = 28,404.66 × 11,151.67
  4. Step 4: Simplify right side
    20,583.13x = 316,759,394.78
  5. Step 5: Solve for x
    x = 316,759,394.78/20,583.13
  6. Step 6: Final answer
    x = 15,389.27

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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.