Home / 21,270.75-29,354.34-11,711.36

Finding the Fourth Proportional to 21,270.75, 29,354.34 and 11,711.36

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Solution

The fourth proportional to 21,270.75, 29,354.34 and 11,711.36 is: 16,162.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,270.75 : 29,354.34 = 11,711.36 : x
  2. Step 2: Convert to fraction form
    21,270.75/29,354.34 = 11,711.36/x
  3. Step 3: Cross multiply
    21,270.75x = 29,354.34 × 11,711.36
  4. Step 4: Simplify right side
    21,270.75x = 343,779,243.30
  5. Step 5: Solve for x
    x = 343,779,243.30/21,270.75
  6. Step 6: Final answer
    x = 16,162.06

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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.