Home / 20,517.24-28,313.80-11,085.80

Finding the Fourth Proportional to 20,517.24, 28,313.80 and 11,085.80

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Solution

The fourth proportional to 20,517.24, 28,313.80 and 11,085.80 is: 15,298.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,517.24 : 28,313.80 = 11,085.80 : x
  2. Step 2: Convert to fraction form
    20,517.24/28,313.80 = 11,085.80/x
  3. Step 3: Cross multiply
    20,517.24x = 28,313.80 × 11,085.80
  4. Step 4: Simplify right side
    20,517.24x = 313,881,124.04
  5. Step 5: Solve for x
    x = 313,881,124.04/20,517.24
  6. Step 6: Final answer
    x = 15,298.41

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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.