Home / 13,827.78-19,081.80-7,540.02

Finding the Fourth Proportional to 13,827.78, 19,081.80 and 7,540.02

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Solution

The fourth proportional to 13,827.78, 19,081.80 and 7,540.02 is: 10,404.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,827.78 : 19,081.80 = 7,540.02 : x
  2. Step 2: Convert to fraction form
    13,827.78/19,081.80 = 7,540.02/x
  3. Step 3: Cross multiply
    13,827.78x = 19,081.80 × 7,540.02
  4. Step 4: Simplify right side
    13,827.78x = 143,877,153.64
  5. Step 5: Solve for x
    x = 143,877,153.64/13,827.78
  6. Step 6: Final answer
    x = 10,404.94

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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.