Home / 21,477.16-29,609.22-13,909.96

Finding the Fourth Proportional to 21,477.16, 29,609.22 and 13,909.96

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Solution

The fourth proportional to 21,477.16, 29,609.22 and 13,909.96 is: 19,176.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,477.16 : 29,609.22 = 13,909.96 : x
  2. Step 2: Convert to fraction form
    21,477.16/29,609.22 = 13,909.96/x
  3. Step 3: Cross multiply
    21,477.16x = 29,609.22 × 13,909.96
  4. Step 4: Simplify right side
    21,477.16x = 411,863,065.83
  5. Step 5: Solve for x
    x = 411,863,065.83/21,477.16
  6. Step 6: Final answer
    x = 19,176.79

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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.