Home / 21,440.09-32,179.74-10,917.38

Finding the Fourth Proportional to 21,440.09, 32,179.74 and 10,917.38

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Solution

The fourth proportional to 21,440.09, 32,179.74 and 10,917.38 is: 16,386.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,440.09 : 32,179.74 = 10,917.38 : x
  2. Step 2: Convert to fraction form
    21,440.09/32,179.74 = 10,917.38/x
  3. Step 3: Cross multiply
    21,440.09x = 32,179.74 × 10,917.38
  4. Step 4: Simplify right side
    21,440.09x = 351,318,288.98
  5. Step 5: Solve for x
    x = 351,318,288.98/21,440.09
  6. Step 6: Final answer
    x = 16,386.05

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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.