Home / 54,204.19-81,329.54-20,947.60

Finding the Fourth Proportional to 54,204.19, 81,329.54 and 20,947.60

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Solution

The fourth proportional to 54,204.19, 81,329.54 and 20,947.60 is: 31,430.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,204.19 : 81,329.54 = 20,947.60 : x
  2. Step 2: Convert to fraction form
    54,204.19/81,329.54 = 20,947.60/x
  3. Step 3: Cross multiply
    54,204.19x = 81,329.54 × 20,947.60
  4. Step 4: Simplify right side
    54,204.19x = 1,703,658,672.10
  5. Step 5: Solve for x
    x = 1,703,658,672.10/54,204.19
  6. Step 6: Final answer
    x = 31,430.39

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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.