Home / 20,581.00-28,401.77-11,149.56

Finding the Fourth Proportional to 20,581.00, 28,401.77 and 11,149.56

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Solution

The fourth proportional to 20,581.00, 28,401.77 and 11,149.56 is: 15,386.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,581.00 : 28,401.77 = 11,149.56 : x
  2. Step 2: Convert to fraction form
    20,581.00/28,401.77 = 11,149.56/x
  3. Step 3: Cross multiply
    20,581.00x = 28,401.77 × 11,149.56
  4. Step 4: Simplify right side
    20,581.00x = 316,667,266.60
  5. Step 5: Solve for x
    x = 316,667,266.60/20,581.00
  6. Step 6: Final answer
    x = 15,386.39

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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.