Home / 19,815.12-27,344.72-10,863

Finding the Fourth Proportional to 19,815.12, 27,344.72 and 10,863

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Solution

The fourth proportional to 19,815.12, 27,344.72 and 10,863 is: 14,990.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,815.12 : 27,344.72 = 10,863 : x
  2. Step 2: Convert to fraction form
    19,815.12/27,344.72 = 10,863/x
  3. Step 3: Cross multiply
    19,815.12x = 27,344.72 × 10,863
  4. Step 4: Simplify right side
    19,815.12x = 297,045,693.36
  5. Step 5: Solve for x
    x = 297,045,693.36/19,815.12
  6. Step 6: Final answer
    x = 14,990.86

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1.5x scale

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.