Home / 54,288.09-81,412.12-18,740.37

Finding the Fourth Proportional to 54,288.09, 81,412.12 and 18,740.37

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Solution

The fourth proportional to 54,288.09, 81,412.12 and 18,740.37 is: 28,103.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,288.09 : 81,412.12 = 18,740.37 : x
  2. Step 2: Convert to fraction form
    54,288.09/81,412.12 = 18,740.37/x
  3. Step 3: Cross multiply
    54,288.09x = 81,412.12 × 18,740.37
  4. Step 4: Simplify right side
    54,288.09x = 1,525,693,251.28
  5. Step 5: Solve for x
    x = 1,525,693,251.28/54,288.09
  6. Step 6: Final answer
    x = 28,103.65

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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.