Home / 21,146.68-29,169.20-13,602.83

Finding the Fourth Proportional to 21,146.68, 29,169.20 and 13,602.83

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Solution

The fourth proportional to 21,146.68, 29,169.20 and 13,602.83 is: 18,763.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,146.68 : 29,169.20 = 13,602.83 : x
  2. Step 2: Convert to fraction form
    21,146.68/29,169.20 = 13,602.83/x
  3. Step 3: Cross multiply
    21,146.68x = 29,169.20 × 13,602.83
  4. Step 4: Simplify right side
    21,146.68x = 396,783,775.77
  5. Step 5: Solve for x
    x = 396,783,775.77/21,146.68
  6. Step 6: Final answer
    x = 18,763.41

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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.