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Finding the Fourth Proportional to 13,157.76, 19,736.79 and 7,607.75

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Solution

The fourth proportional to 13,157.76, 19,736.79 and 7,607.75 is: 11,411.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,157.76 : 19,736.79 = 7,607.75 : x
  2. Step 2: Convert to fraction form
    13,157.76/19,736.79 = 7,607.75/x
  3. Step 3: Cross multiply
    13,157.76x = 19,736.79 × 7,607.75
  4. Step 4: Simplify right side
    13,157.76x = 150,152,465.44
  5. Step 5: Solve for x
    x = 150,152,465.44/13,157.76
  6. Step 6: Final answer
    x = 11,411.70

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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.