Home / 21,270.83-29,353.25-13,317.44

Finding the Fourth Proportional to 21,270.83, 29,353.25 and 13,317.44

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Solution

The fourth proportional to 21,270.83, 29,353.25 and 13,317.44 is: 18,377.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,270.83 : 29,353.25 = 13,317.44 : x
  2. Step 2: Convert to fraction form
    21,270.83/29,353.25 = 13,317.44/x
  3. Step 3: Cross multiply
    21,270.83x = 29,353.25 × 13,317.44
  4. Step 4: Simplify right side
    21,270.83x = 390,910,032.21
  5. Step 5: Solve for x
    x = 390,910,032.21/21,270.83
  6. Step 6: Final answer
    x = 18,377.76

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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.