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Finding the Fourth Proportional to 19,951.25, 27,532.90 and 10,999.07

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Solution

The fourth proportional to 19,951.25, 27,532.90 and 10,999.07 is: 15,178.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,951.25 : 27,532.90 = 10,999.07 : x
  2. Step 2: Convert to fraction form
    19,951.25/27,532.90 = 10,999.07/x
  3. Step 3: Cross multiply
    19,951.25x = 27,532.90 × 10,999.07
  4. Step 4: Simplify right side
    19,951.25x = 302,836,227.23
  5. Step 5: Solve for x
    x = 302,836,227.23/19,951.25
  6. Step 6: Final answer
    x = 15,178.81

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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.