Home / 21,188.46-29,239.38-11,757.72

Finding the Fourth Proportional to 21,188.46, 29,239.38 and 11,757.72

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Solution

The fourth proportional to 21,188.46, 29,239.38 and 11,757.72 is: 16,225.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,188.46 : 29,239.38 = 11,757.72 : x
  2. Step 2: Convert to fraction form
    21,188.46/29,239.38 = 11,757.72/x
  3. Step 3: Cross multiply
    21,188.46x = 29,239.38 × 11,757.72
  4. Step 4: Simplify right side
    21,188.46x = 343,788,443.01
  5. Step 5: Solve for x
    x = 343,788,443.01/21,188.46
  6. Step 6: Final answer
    x = 16,225.27

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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.