Home / 21,279.63-29,365.35-11,719.44

Finding the Fourth Proportional to 21,279.63, 29,365.35 and 11,719.44

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Solution

The fourth proportional to 21,279.63, 29,365.35 and 11,719.44 is: 16,172.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,279.63 : 29,365.35 = 11,719.44 : x
  2. Step 2: Convert to fraction form
    21,279.63/29,365.35 = 11,719.44/x
  3. Step 3: Cross multiply
    21,279.63x = 29,365.35 × 11,719.44
  4. Step 4: Simplify right side
    21,279.63x = 344,145,457.40
  5. Step 5: Solve for x
    x = 344,145,457.40/21,279.63
  6. Step 6: Final answer
    x = 16,172.53

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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.