Home / 13,051.92-19,539-12,585.36

Finding the Fourth Proportional to 13,051.92, 19,539 and 12,585.36

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Solution

The fourth proportional to 13,051.92, 19,539 and 12,585.36 is: 18,840.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,051.92 : 19,539 = 12,585.36 : x
  2. Step 2: Convert to fraction form
    13,051.92/19,539 = 12,585.36/x
  3. Step 3: Cross multiply
    13,051.92x = 19,539 × 12,585.36
  4. Step 4: Simplify right side
    13,051.92x = 245,905,349.04
  5. Step 5: Solve for x
    x = 245,905,349.04/13,051.92
  6. Step 6: Final answer
    x = 18,840.55

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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.