Home / 20,502.08-28,293.37-11,427.65

Finding the Fourth Proportional to 20,502.08, 28,293.37 and 11,427.65

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Solution

The fourth proportional to 20,502.08, 28,293.37 and 11,427.65 is: 15,770.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,502.08 : 28,293.37 = 11,427.65 : x
  2. Step 2: Convert to fraction form
    20,502.08/28,293.37 = 11,427.65/x
  3. Step 3: Cross multiply
    20,502.08x = 28,293.37 × 11,427.65
  4. Step 4: Simplify right side
    20,502.08x = 323,326,665.74
  5. Step 5: Solve for x
    x = 323,326,665.74/20,502.08
  6. Step 6: Final answer
    x = 15,770.43

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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.