Home / 21,261.29-29,327.67-13,296.96

Finding the Fourth Proportional to 21,261.29, 29,327.67 and 13,296.96

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Solution

The fourth proportional to 21,261.29, 29,327.67 and 13,296.96 is: 18,341.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,261.29 : 29,327.67 = 13,296.96 : x
  2. Step 2: Convert to fraction form
    21,261.29/29,327.67 = 13,296.96/x
  3. Step 3: Cross multiply
    21,261.29x = 29,327.67 × 13,296.96
  4. Step 4: Simplify right side
    21,261.29x = 389,968,854.88
  5. Step 5: Solve for x
    x = 389,968,854.88/21,261.29
  6. Step 6: Final answer
    x = 18,341.73

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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.