Home / 13,970.43-20,955.64-4,109.71

Finding the Fourth Proportional to 13,970.43, 20,955.64 and 4,109.71

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Solution

The fourth proportional to 13,970.43, 20,955.64 and 4,109.71 is: 6,164.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,970.43 : 20,955.64 = 4,109.71 : x
  2. Step 2: Convert to fraction form
    13,970.43/20,955.64 = 4,109.71/x
  3. Step 3: Cross multiply
    13,970.43x = 20,955.64 × 4,109.71
  4. Step 4: Simplify right side
    13,970.43x = 86,121,603.26
  5. Step 5: Solve for x
    x = 86,121,603.26/13,970.43
  6. Step 6: Final answer
    x = 6,164.56

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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.