Home / 21,345.46-29,456.26-12,392.73

Finding the Fourth Proportional to 21,345.46, 29,456.26 and 12,392.73

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Solution

The fourth proportional to 21,345.46, 29,456.26 and 12,392.73 is: 17,101.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,345.46 : 29,456.26 = 12,392.73 : x
  2. Step 2: Convert to fraction form
    21,345.46/29,456.26 = 12,392.73/x
  3. Step 3: Cross multiply
    21,345.46x = 29,456.26 × 12,392.73
  4. Step 4: Simplify right side
    21,345.46x = 365,043,446.01
  5. Step 5: Solve for x
    x = 365,043,446.01/21,345.46
  6. Step 6: Final answer
    x = 17,101.69

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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.