Home / 38,971.92-53,781.22-21,066.86

Finding the Fourth Proportional to 38,971.92, 53,781.22 and 21,066.86

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Solution

The fourth proportional to 38,971.92, 53,781.22 and 21,066.86 is: 29,072.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,971.92 : 53,781.22 = 21,066.86 : x
  2. Step 2: Convert to fraction form
    38,971.92/53,781.22 = 21,066.86/x
  3. Step 3: Cross multiply
    38,971.92x = 53,781.22 × 21,066.86
  4. Step 4: Simplify right side
    38,971.92x = 1,133,001,432.37
  5. Step 5: Solve for x
    x = 1,133,001,432.37/38,971.92
  6. Step 6: Final answer
    x = 29,072.25

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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.