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Finding the Fourth Proportional to 9,994.65, 14,917.85 and 8,654.46

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Solution

The fourth proportional to 9,994.65, 14,917.85 and 8,654.46 is: 12,917.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,994.65 : 14,917.85 = 8,654.46 : x
  2. Step 2: Convert to fraction form
    9,994.65/14,917.85 = 8,654.46/x
  3. Step 3: Cross multiply
    9,994.65x = 14,917.85 × 8,654.46
  4. Step 4: Simplify right side
    9,994.65x = 129,105,936.11
  5. Step 5: Solve for x
    x = 129,105,936.11/9,994.65
  6. Step 6: Final answer
    x = 12,917.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.