Home / 21,313.35-29,404.71-12,355.92

Finding the Fourth Proportional to 21,313.35, 29,404.71 and 12,355.92

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Solution

The fourth proportional to 21,313.35, 29,404.71 and 12,355.92 is: 17,046.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,313.35 : 29,404.71 = 12,355.92 : x
  2. Step 2: Convert to fraction form
    21,313.35/29,404.71 = 12,355.92/x
  3. Step 3: Cross multiply
    21,313.35x = 29,404.71 × 12,355.92
  4. Step 4: Simplify right side
    21,313.35x = 363,322,244.38
  5. Step 5: Solve for x
    x = 363,322,244.38/21,313.35
  6. Step 6: Final answer
    x = 17,046.70

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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.