Home / 20,172.90-27,835.98-11,218.62

Finding the Fourth Proportional to 20,172.90, 27,835.98 and 11,218.62

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Solution

The fourth proportional to 20,172.90, 27,835.98 and 11,218.62 is: 15,480.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,172.90 : 27,835.98 = 11,218.62 : x
  2. Step 2: Convert to fraction form
    20,172.90/27,835.98 = 11,218.62/x
  3. Step 3: Cross multiply
    20,172.90x = 27,835.98 × 11,218.62
  4. Step 4: Simplify right side
    20,172.90x = 312,281,281.95
  5. Step 5: Solve for x
    x = 312,281,281.95/20,172.90
  6. Step 6: Final answer
    x = 15,480.24

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1.5x scale

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.