Home / 20,368.98-28,110.24-11,418.48

Finding the Fourth Proportional to 20,368.98, 28,110.24 and 11,418.48

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Solution

The fourth proportional to 20,368.98, 28,110.24 and 11,418.48 is: 15,758.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,368.98 : 28,110.24 = 11,418.48 : x
  2. Step 2: Convert to fraction form
    20,368.98/28,110.24 = 11,418.48/x
  3. Step 3: Cross multiply
    20,368.98x = 28,110.24 × 11,418.48
  4. Step 4: Simplify right side
    20,368.98x = 320,976,213.24
  5. Step 5: Solve for x
    x = 320,976,213.24/20,368.98
  6. Step 6: Final answer
    x = 15,758.09

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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.