Home / 21,404.36-29,535.36-11,970.56

Finding the Fourth Proportional to 21,404.36, 29,535.36 and 11,970.56

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Solution

The fourth proportional to 21,404.36, 29,535.36 and 11,970.56 is: 16,517.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,404.36 : 29,535.36 = 11,970.56 : x
  2. Step 2: Convert to fraction form
    21,404.36/29,535.36 = 11,970.56/x
  3. Step 3: Cross multiply
    21,404.36x = 29,535.36 × 11,970.56
  4. Step 4: Simplify right side
    21,404.36x = 353,554,799.00
  5. Step 5: Solve for x
    x = 353,554,799.00/21,404.36
  6. Step 6: Final answer
    x = 16,517.89

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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.