Home / 54,219.67-81,313.86-18,679.54

Finding the Fourth Proportional to 54,219.67, 81,313.86 and 18,679.54

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Solution

The fourth proportional to 54,219.67, 81,313.86 and 18,679.54 is: 28,013.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,219.67 : 81,313.86 = 18,679.54 : x
  2. Step 2: Convert to fraction form
    54,219.67/81,313.86 = 18,679.54/x
  3. Step 3: Cross multiply
    54,219.67x = 81,313.86 × 18,679.54
  4. Step 4: Simplify right side
    54,219.67x = 1,518,905,500.42
  5. Step 5: Solve for x
    x = 1,518,905,500.42/54,219.67
  6. Step 6: Final answer
    x = 28,013.92

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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.