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Finding the Fourth Proportional to 19,951.70, 29,927.55 and 6,818.90

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Solution

The fourth proportional to 19,951.70, 29,927.55 and 6,818.90 is: 10,228.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,951.70 : 29,927.55 = 6,818.90 : x
  2. Step 2: Convert to fraction form
    19,951.70/29,927.55 = 6,818.90/x
  3. Step 3: Cross multiply
    19,951.70x = 29,927.55 × 6,818.90
  4. Step 4: Simplify right side
    19,951.70x = 204,072,970.70
  5. Step 5: Solve for x
    x = 204,072,970.70/19,951.70
  6. Step 6: Final answer
    x = 10,228.35

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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.