Home / 54,278.08-81,408.72-21,013.60

Finding the Fourth Proportional to 54,278.08, 81,408.72 and 21,013.60

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Solution

The fourth proportional to 54,278.08, 81,408.72 and 21,013.60 is: 31,517.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,278.08 : 81,408.72 = 21,013.60 : x
  2. Step 2: Convert to fraction form
    54,278.08/81,408.72 = 21,013.60/x
  3. Step 3: Cross multiply
    54,278.08x = 81,408.72 × 21,013.60
  4. Step 4: Simplify right side
    54,278.08x = 1,710,690,278.59
  5. Step 5: Solve for x
    x = 1,710,690,278.59/54,278.08
  6. Step 6: Final answer
    x = 31,517.15

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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.