Home / 54,171.40-81,280.36-20,914.82

Finding the Fourth Proportional to 54,171.40, 81,280.36 and 20,914.82

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Solution

The fourth proportional to 54,171.40, 81,280.36 and 20,914.82 is: 31,381.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,171.40 : 81,280.36 = 20,914.82 : x
  2. Step 2: Convert to fraction form
    54,171.40/81,280.36 = 20,914.82/x
  3. Step 3: Cross multiply
    54,171.40x = 81,280.36 × 20,914.82
  4. Step 4: Simplify right side
    54,171.40x = 1,699,964,354.42
  5. Step 5: Solve for x
    x = 1,699,964,354.42/54,171.40
  6. Step 6: Final answer
    x = 31,381.22

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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.