Home / 21,644.14-29,873.58-13,681.30

Finding the Fourth Proportional to 21,644.14, 29,873.58 and 13,681.30

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Solution

The fourth proportional to 21,644.14, 29,873.58 and 13,681.30 is: 18,883.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,644.14 : 29,873.58 = 13,681.30 : x
  2. Step 2: Convert to fraction form
    21,644.14/29,873.58 = 13,681.30/x
  3. Step 3: Cross multiply
    21,644.14x = 29,873.58 × 13,681.30
  4. Step 4: Simplify right side
    21,644.14x = 408,709,410.05
  5. Step 5: Solve for x
    x = 408,709,410.05/21,644.14
  6. Step 6: Final answer
    x = 18,883.14

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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.