Home / 13,141.78-19,719.96-9,638.93

Finding the Fourth Proportional to 13,141.78, 19,719.96 and 9,638.93

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Solution

The fourth proportional to 13,141.78, 19,719.96 and 9,638.93 is: 14,463.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,141.78 : 19,719.96 = 9,638.93 : x
  2. Step 2: Convert to fraction form
    13,141.78/19,719.96 = 9,638.93/x
  3. Step 3: Cross multiply
    13,141.78x = 19,719.96 × 9,638.93
  4. Step 4: Simplify right side
    13,141.78x = 190,079,327.20
  5. Step 5: Solve for x
    x = 190,079,327.20/13,141.78
  6. Step 6: Final answer
    x = 14,463.75

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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.