Home / 13,129.39-19,686.79-4,359.52

Finding the Fourth Proportional to 13,129.39, 19,686.79 and 4,359.52

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Solution

The fourth proportional to 13,129.39, 19,686.79 and 4,359.52 is: 6,536.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,129.39 : 19,686.79 = 4,359.52 : x
  2. Step 2: Convert to fraction form
    13,129.39/19,686.79 = 4,359.52/x
  3. Step 3: Cross multiply
    13,129.39x = 19,686.79 × 4,359.52
  4. Step 4: Simplify right side
    13,129.39x = 85,824,954.74
  5. Step 5: Solve for x
    x = 85,824,954.74/13,129.39
  6. Step 6: Final answer
    x = 6,536.86

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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.