Home / 38,009.43-52,453.01-20,781.86

Finding the Fourth Proportional to 38,009.43, 52,453.01 and 20,781.86

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Solution

The fourth proportional to 38,009.43, 52,453.01 and 20,781.86 is: 28,678.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,009.43 : 52,453.01 = 20,781.86 : x
  2. Step 2: Convert to fraction form
    38,009.43/52,453.01 = 20,781.86/x
  3. Step 3: Cross multiply
    38,009.43x = 52,453.01 × 20,781.86
  4. Step 4: Simplify right side
    38,009.43x = 1,090,070,744.22
  5. Step 5: Solve for x
    x = 1,090,070,744.22/38,009.43
  6. Step 6: Final answer
    x = 28,678.96

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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.