Home / 13,450.66-20,116.98-11,980.24

Finding the Fourth Proportional to 13,450.66, 20,116.98 and 11,980.24

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Solution

The fourth proportional to 13,450.66, 20,116.98 and 11,980.24 is: 17,917.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,450.66 : 20,116.98 = 11,980.24 : x
  2. Step 2: Convert to fraction form
    13,450.66/20,116.98 = 11,980.24/x
  3. Step 3: Cross multiply
    13,450.66x = 20,116.98 × 11,980.24
  4. Step 4: Simplify right side
    13,450.66x = 241,006,248.48
  5. Step 5: Solve for x
    x = 241,006,248.48/13,450.66
  6. Step 6: Final answer
    x = 17,917.80

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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.