Home / 20,609.08-28,437.06-12,109.48

Finding the Fourth Proportional to 20,609.08, 28,437.06 and 12,109.48

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Solution

The fourth proportional to 20,609.08, 28,437.06 and 12,109.48 is: 16,709.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,609.08 : 28,437.06 = 12,109.48 : x
  2. Step 2: Convert to fraction form
    20,609.08/28,437.06 = 12,109.48/x
  3. Step 3: Cross multiply
    20,609.08x = 28,437.06 × 12,109.48
  4. Step 4: Simplify right side
    20,609.08x = 344,358,009.33
  5. Step 5: Solve for x
    x = 344,358,009.33/20,609.08
  6. Step 6: Final answer
    x = 16,709.04

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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.