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Finding the Fourth Proportional to 12,659.20, 17,476.80 and 7,624.80

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Solution

The fourth proportional to 12,659.20, 17,476.80 and 7,624.80 is: 10,526.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,659.20 : 17,476.80 = 7,624.80 : x
  2. Step 2: Convert to fraction form
    12,659.20/17,476.80 = 7,624.80/x
  3. Step 3: Cross multiply
    12,659.20x = 17,476.80 × 7,624.80
  4. Step 4: Simplify right side
    12,659.20x = 133,257,104.64
  5. Step 5: Solve for x
    x = 133,257,104.64/12,659.20
  6. Step 6: Final answer
    x = 10,526.50

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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.