Home / 54,513.12-81,790.74-21,256.80

Finding the Fourth Proportional to 54,513.12, 81,790.74 and 21,256.80

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Solution

The fourth proportional to 54,513.12, 81,790.74 and 21,256.80 is: 31,893.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,513.12 : 81,790.74 = 21,256.80 : x
  2. Step 2: Convert to fraction form
    54,513.12/81,790.74 = 21,256.80/x
  3. Step 3: Cross multiply
    54,513.12x = 81,790.74 × 21,256.80
  4. Step 4: Simplify right side
    54,513.12x = 1,738,609,402.03
  5. Step 5: Solve for x
    x = 1,738,609,402.03/54,513.12
  6. Step 6: Final answer
    x = 31,893.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.