Home / 13,869.69-19,140.93-8,207.79

Finding the Fourth Proportional to 13,869.69, 19,140.93 and 8,207.79

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Solution

The fourth proportional to 13,869.69, 19,140.93 and 8,207.79 is: 11,327.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,869.69 : 19,140.93 = 8,207.79 : x
  2. Step 2: Convert to fraction form
    13,869.69/19,140.93 = 8,207.79/x
  3. Step 3: Cross multiply
    13,869.69x = 19,140.93 × 8,207.79
  4. Step 4: Simplify right side
    13,869.69x = 157,104,733.84
  5. Step 5: Solve for x
    x = 157,104,733.84/13,869.69
  6. Step 6: Final answer
    x = 11,327.20

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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.