Home / 19,815.06-27,305.43-14,139.90

Finding the Fourth Proportional to 19,815.06, 27,305.43 and 14,139.90

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Solution

The fourth proportional to 19,815.06, 27,305.43 and 14,139.90 is: 19,484.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,815.06 : 27,305.43 = 14,139.90 : x
  2. Step 2: Convert to fraction form
    19,815.06/27,305.43 = 14,139.90/x
  3. Step 3: Cross multiply
    19,815.06x = 27,305.43 × 14,139.90
  4. Step 4: Simplify right side
    19,815.06x = 386,096,049.66
  5. Step 5: Solve for x
    x = 386,096,049.66/19,815.06
  6. Step 6: Final answer
    x = 19,484.98

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.