Home / 54,009.90-81,039.15-18,974.70

Finding the Fourth Proportional to 54,009.90, 81,039.15 and 18,974.70

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Solution

The fourth proportional to 54,009.90, 81,039.15 and 18,974.70 is: 28,470.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,009.90 : 81,039.15 = 18,974.70 : x
  2. Step 2: Convert to fraction form
    54,009.90/81,039.15 = 18,974.70/x
  3. Step 3: Cross multiply
    54,009.90x = 81,039.15 × 18,974.70
  4. Step 4: Simplify right side
    54,009.90x = 1,537,693,559.51
  5. Step 5: Solve for x
    x = 1,537,693,559.51/54,009.90
  6. Step 6: Final answer
    x = 28,470.59

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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.