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Finding the Fourth Proportional to 15,656.80, 23,487.79 and 7,759.68

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Solution

The fourth proportional to 15,656.80, 23,487.79 and 7,759.68 is: 11,640.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,656.80 : 23,487.79 = 7,759.68 : x
  2. Step 2: Convert to fraction form
    15,656.80/23,487.79 = 7,759.68/x
  3. Step 3: Cross multiply
    15,656.80x = 23,487.79 × 7,759.68
  4. Step 4: Simplify right side
    15,656.80x = 182,257,773.63
  5. Step 5: Solve for x
    x = 182,257,773.63/15,656.80
  6. Step 6: Final answer
    x = 11,640.81

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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.