Home / 21,179.55-31,738.70-11,693.74

Finding the Fourth Proportional to 21,179.55, 31,738.70 and 11,693.74

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Solution

The fourth proportional to 21,179.55, 31,738.70 and 11,693.74 is: 17,523.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,179.55 : 31,738.70 = 11,693.74 : x
  2. Step 2: Convert to fraction form
    21,179.55/31,738.70 = 11,693.74/x
  3. Step 3: Cross multiply
    21,179.55x = 31,738.70 × 11,693.74
  4. Step 4: Simplify right side
    21,179.55x = 371,144,105.74
  5. Step 5: Solve for x
    x = 371,144,105.74/21,179.55
  6. Step 6: Final answer
    x = 17,523.70

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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.