Home / 21,327.01-29,430.84-12,375.39

Finding the Fourth Proportional to 21,327.01, 29,430.84 and 12,375.39

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Solution

The fourth proportional to 21,327.01, 29,430.84 and 12,375.39 is: 17,077.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,327.01 : 29,430.84 = 12,375.39 : x
  2. Step 2: Convert to fraction form
    21,327.01/29,430.84 = 12,375.39/x
  3. Step 3: Cross multiply
    21,327.01x = 29,430.84 × 12,375.39
  4. Step 4: Simplify right side
    21,327.01x = 364,218,123.03
  5. Step 5: Solve for x
    x = 364,218,123.03/21,327.01
  6. Step 6: Final answer
    x = 17,077.79

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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.