Home / 20,427.93-28,189.62-11,930.22

Finding the Fourth Proportional to 20,427.93, 28,189.62 and 11,930.22

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Solution

The fourth proportional to 20,427.93, 28,189.62 and 11,930.22 is: 16,463.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,427.93 : 28,189.62 = 11,930.22 : x
  2. Step 2: Convert to fraction form
    20,427.93/28,189.62 = 11,930.22/x
  3. Step 3: Cross multiply
    20,427.93x = 28,189.62 × 11,930.22
  4. Step 4: Simplify right side
    20,427.93x = 336,308,368.32
  5. Step 5: Solve for x
    x = 336,308,368.32/20,427.93
  6. Step 6: Final answer
    x = 16,463.16

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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.