Home / 21,389.25-29,530.14-13,950.21

Finding the Fourth Proportional to 21,389.25, 29,530.14 and 13,950.21

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Solution

The fourth proportional to 21,389.25, 29,530.14 and 13,950.21 is: 19,259.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,389.25 : 29,530.14 = 13,950.21 : x
  2. Step 2: Convert to fraction form
    21,389.25/29,530.14 = 13,950.21/x
  3. Step 3: Cross multiply
    21,389.25x = 29,530.14 × 13,950.21
  4. Step 4: Simplify right side
    21,389.25x = 411,951,654.33
  5. Step 5: Solve for x
    x = 411,951,654.33/21,389.25
  6. Step 6: Final answer
    x = 19,259.75

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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.