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Finding the Fourth Proportional to 20,802.94, 31,204.41 and 6,951.94

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Solution

The fourth proportional to 20,802.94, 31,204.41 and 6,951.94 is: 10,427.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,802.94 : 31,204.41 = 6,951.94 : x
  2. Step 2: Convert to fraction form
    20,802.94/31,204.41 = 6,951.94/x
  3. Step 3: Cross multiply
    20,802.94x = 31,204.41 × 6,951.94
  4. Step 4: Simplify right side
    20,802.94x = 216,931,108.04
  5. Step 5: Solve for x
    x = 216,931,108.04/20,802.94
  6. Step 6: Final answer
    x = 10,427.91

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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.