Home / 14,012.73-21,016.89-3,878.72

Finding the Fourth Proportional to 14,012.73, 21,016.89 and 3,878.72

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Solution

The fourth proportional to 14,012.73, 21,016.89 and 3,878.72 is: 5,817.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,012.73 : 21,016.89 = 3,878.72 : x
  2. Step 2: Convert to fraction form
    14,012.73/21,016.89 = 3,878.72/x
  3. Step 3: Cross multiply
    14,012.73x = 21,016.89 × 3,878.72
  4. Step 4: Simplify right side
    14,012.73x = 81,518,631.58
  5. Step 5: Solve for x
    x = 81,518,631.58/14,012.73
  6. Step 6: Final answer
    x = 5,817.47

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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.