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Finding the Fourth Proportional to 14,767, 20,378.46 and 8,479.78

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Solution

The fourth proportional to 14,767, 20,378.46 and 8,479.78 is: 11,702.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,767 : 20,378.46 = 8,479.78 : x
  2. Step 2: Convert to fraction form
    14,767/20,378.46 = 8,479.78/x
  3. Step 3: Cross multiply
    14,767x = 20,378.46 × 8,479.78
  4. Step 4: Simplify right side
    14,767x = 172,804,857.54
  5. Step 5: Solve for x
    x = 172,804,857.54/14,767
  6. Step 6: Final answer
    x = 11,702.10

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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.