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Finding the Fourth Proportional to 20,802.19, 31,203.28 and 6,951.19

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Solution

The fourth proportional to 20,802.19, 31,203.28 and 6,951.19 is: 10,426.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,802.19 : 31,203.28 = 6,951.19 : x
  2. Step 2: Convert to fraction form
    20,802.19/31,203.28 = 6,951.19/x
  3. Step 3: Cross multiply
    20,802.19x = 31,203.28 × 6,951.19
  4. Step 4: Simplify right side
    20,802.19x = 216,899,858.58
  5. Step 5: Solve for x
    x = 216,899,858.58/20,802.19
  6. Step 6: Final answer
    x = 10,426.78

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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.