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Finding the Fourth Proportional to 14,285.85, 19,714.46 and 8,696.85

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Solution

The fourth proportional to 14,285.85, 19,714.46 and 8,696.85 is: 12,001.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,285.85 : 19,714.46 = 8,696.85 : x
  2. Step 2: Convert to fraction form
    14,285.85/19,714.46 = 8,696.85/x
  3. Step 3: Cross multiply
    14,285.85x = 19,714.46 × 8,696.85
  4. Step 4: Simplify right side
    14,285.85x = 171,453,701.45
  5. Step 5: Solve for x
    x = 171,453,701.45/14,285.85
  6. Step 6: Final answer
    x = 12,001.65

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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.