Home / 20,427.15-28,190.48-11,474.19

Finding the Fourth Proportional to 20,427.15, 28,190.48 and 11,474.19

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Solution

The fourth proportional to 20,427.15, 28,190.48 and 11,474.19 is: 15,834.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,427.15 : 28,190.48 = 11,474.19 : x
  2. Step 2: Convert to fraction form
    20,427.15/28,190.48 = 11,474.19/x
  3. Step 3: Cross multiply
    20,427.15x = 28,190.48 × 11,474.19
  4. Step 4: Simplify right side
    20,427.15x = 323,462,866.34
  5. Step 5: Solve for x
    x = 323,462,866.34/20,427.15
  6. Step 6: Final answer
    x = 15,834.95

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Double scale
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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.