Home / 20,508.99-28,302.42-11,077.55

Finding the Fourth Proportional to 20,508.99, 28,302.42 and 11,077.55

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Solution

The fourth proportional to 20,508.99, 28,302.42 and 11,077.55 is: 15,287.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,508.99 : 28,302.42 = 11,077.55 : x
  2. Step 2: Convert to fraction form
    20,508.99/28,302.42 = 11,077.55/x
  3. Step 3: Cross multiply
    20,508.99x = 28,302.42 × 11,077.55
  4. Step 4: Simplify right side
    20,508.99x = 313,521,395.75
  5. Step 5: Solve for x
    x = 313,521,395.75/20,508.99
  6. Step 6: Final answer
    x = 15,287.03

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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.