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Finding the Fourth Proportional to 14,659.67, 21,994.64 and 7,639.40

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Solution

The fourth proportional to 14,659.67, 21,994.64 and 7,639.40 is: 11,461.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,659.67 : 21,994.64 = 7,639.40 : x
  2. Step 2: Convert to fraction form
    14,659.67/21,994.64 = 7,639.40/x
  3. Step 3: Cross multiply
    14,659.67x = 21,994.64 × 7,639.40
  4. Step 4: Simplify right side
    14,659.67x = 168,025,852.82
  5. Step 5: Solve for x
    x = 168,025,852.82/14,659.67
  6. Step 6: Final answer
    x = 11,461.78

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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.