Home / 27,120.96-37,447.92-21,840.57

Finding the Fourth Proportional to 27,120.96, 37,447.92 and 21,840.57

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Solution

The fourth proportional to 27,120.96, 37,447.92 and 21,840.57 is: 30,156.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,120.96 : 37,447.92 = 21,840.57 : x
  2. Step 2: Convert to fraction form
    27,120.96/37,447.92 = 21,840.57/x
  3. Step 3: Cross multiply
    27,120.96x = 37,447.92 × 21,840.57
  4. Step 4: Simplify right side
    27,120.96x = 817,883,918.11
  5. Step 5: Solve for x
    x = 817,883,918.11/27,120.96
  6. Step 6: Final answer
    x = 30,156.89

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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.