Home / 21,143.14-29,164.25-13,599.27

Finding the Fourth Proportional to 21,143.14, 29,164.25 and 13,599.27

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Solution

The fourth proportional to 21,143.14, 29,164.25 and 13,599.27 is: 18,758.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,143.14 : 29,164.25 = 13,599.27 : x
  2. Step 2: Convert to fraction form
    21,143.14/29,164.25 = 13,599.27/x
  3. Step 3: Cross multiply
    21,143.14x = 29,164.25 × 13,599.27
  4. Step 4: Simplify right side
    21,143.14x = 396,612,544.10
  5. Step 5: Solve for x
    x = 396,612,544.10/21,143.14
  6. Step 6: Final answer
    x = 18,758.45

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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.