Home / 54,510.12-81,786.24-21,253.80

Finding the Fourth Proportional to 54,510.12, 81,786.24 and 21,253.80

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Solution

The fourth proportional to 54,510.12, 81,786.24 and 21,253.80 is: 31,888.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,510.12 : 81,786.24 = 21,253.80 : x
  2. Step 2: Convert to fraction form
    54,510.12/81,786.24 = 21,253.80/x
  3. Step 3: Cross multiply
    54,510.12x = 81,786.24 × 21,253.80
  4. Step 4: Simplify right side
    54,510.12x = 1,738,268,387.71
  5. Step 5: Solve for x
    x = 1,738,268,387.71/54,510.12
  6. Step 6: Final answer
    x = 31,888.91

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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.