Home / 21,112.94-31,641.72-11,748.13

Finding the Fourth Proportional to 21,112.94, 31,641.72 and 11,748.13

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Solution

The fourth proportional to 21,112.94, 31,641.72 and 11,748.13 is: 17,606.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,112.94 : 31,641.72 = 11,748.13 : x
  2. Step 2: Convert to fraction form
    21,112.94/31,641.72 = 11,748.13/x
  3. Step 3: Cross multiply
    21,112.94x = 31,641.72 × 11,748.13
  4. Step 4: Simplify right side
    21,112.94x = 371,731,039.98
  5. Step 5: Solve for x
    x = 371,731,039.98/21,112.94
  6. Step 6: Final answer
    x = 17,606.79

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1.5x scale

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.