Home / 13,999.41-20,979.45-11,911.14

Finding the Fourth Proportional to 13,999.41, 20,979.45 and 11,911.14

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Solution

The fourth proportional to 13,999.41, 20,979.45 and 11,911.14 is: 17,849.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,999.41 : 20,979.45 = 11,911.14 : x
  2. Step 2: Convert to fraction form
    13,999.41/20,979.45 = 11,911.14/x
  3. Step 3: Cross multiply
    13,999.41x = 20,979.45 × 11,911.14
  4. Step 4: Simplify right side
    13,999.41x = 249,889,166.07
  5. Step 5: Solve for x
    x = 249,889,166.07/13,999.41
  6. Step 6: Final answer
    x = 17,849.98

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1.5x scale

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.