Home / 21,197.39-29,246.41-13,648.09

Finding the Fourth Proportional to 21,197.39, 29,246.41 and 13,648.09

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Solution

The fourth proportional to 21,197.39, 29,246.41 and 13,648.09 is: 18,830.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,197.39 : 29,246.41 = 13,648.09 : x
  2. Step 2: Convert to fraction form
    21,197.39/29,246.41 = 13,648.09/x
  3. Step 3: Cross multiply
    21,197.39x = 29,246.41 × 13,648.09
  4. Step 4: Simplify right side
    21,197.39x = 399,157,635.86
  5. Step 5: Solve for x
    x = 399,157,635.86/21,197.39
  6. Step 6: Final answer
    x = 18,830.51

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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.