Home / 21,409.10-32,110.82-9,719.63

Finding the Fourth Proportional to 21,409.10, 32,110.82 and 9,719.63

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Solution

The fourth proportional to 21,409.10, 32,110.82 and 9,719.63 is: 14,578.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,409.10 : 32,110.82 = 9,719.63 : x
  2. Step 2: Convert to fraction form
    21,409.10/32,110.82 = 9,719.63/x
  3. Step 3: Cross multiply
    21,409.10x = 32,110.82 × 9,719.63
  4. Step 4: Simplify right side
    21,409.10x = 312,105,240.80
  5. Step 5: Solve for x
    x = 312,105,240.80/21,409.10
  6. Step 6: Final answer
    x = 14,578.16

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.