Home / 19,678.96-27,141.60-12,606.04

Finding the Fourth Proportional to 19,678.96, 27,141.60 and 12,606.04

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Solution

The fourth proportional to 19,678.96, 27,141.60 and 12,606.04 is: 17,386.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,678.96 : 27,141.60 = 12,606.04 : x
  2. Step 2: Convert to fraction form
    19,678.96/27,141.60 = 12,606.04/x
  3. Step 3: Cross multiply
    19,678.96x = 27,141.60 × 12,606.04
  4. Step 4: Simplify right side
    19,678.96x = 342,148,027.41
  5. Step 5: Solve for x
    x = 342,148,027.41/19,678.96
  6. Step 6: Final answer
    x = 17,386.49

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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.