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Finding the Fourth Proportional to 21,802.38, 32,708.44 and 7,951.38

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Solution

The fourth proportional to 21,802.38, 32,708.44 and 7,951.38 is: 11,928.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,802.38 : 32,708.44 = 7,951.38 : x
  2. Step 2: Convert to fraction form
    21,802.38/32,708.44 = 7,951.38/x
  3. Step 3: Cross multiply
    21,802.38x = 32,708.44 × 7,951.38
  4. Step 4: Simplify right side
    21,802.38x = 260,077,052.23
  5. Step 5: Solve for x
    x = 260,077,052.23/21,802.38
  6. Step 6: Final answer
    x = 11,928.84

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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.