Home / 13,139.82-19,709.93-4,374.74

Finding the Fourth Proportional to 13,139.82, 19,709.93 and 4,374.74

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Solution

The fourth proportional to 13,139.82, 19,709.93 and 4,374.74 is: 6,562.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,139.82 : 19,709.93 = 4,374.74 : x
  2. Step 2: Convert to fraction form
    13,139.82/19,709.93 = 4,374.74/x
  3. Step 3: Cross multiply
    13,139.82x = 19,709.93 × 4,374.74
  4. Step 4: Simplify right side
    13,139.82x = 86,225,879.38
  5. Step 5: Solve for x
    x = 86,225,879.38/13,139.82
  6. Step 6: Final answer
    x = 6,562.18

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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.