Home / 54,215.67-81,307.89-18,675.55

Finding the Fourth Proportional to 54,215.67, 81,307.89 and 18,675.55

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Solution

The fourth proportional to 54,215.67, 81,307.89 and 18,675.55 is: 28,007.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,215.67 : 81,307.89 = 18,675.55 : x
  2. Step 2: Convert to fraction form
    54,215.67/81,307.89 = 18,675.55/x
  3. Step 3: Cross multiply
    54,215.67x = 81,307.89 × 18,675.55
  4. Step 4: Simplify right side
    54,215.67x = 1,518,469,565.09
  5. Step 5: Solve for x
    x = 1,518,469,565.09/54,215.67
  6. Step 6: Final answer
    x = 28,007.95

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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.