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Finding the Fourth Proportional to 19,762.20, 29,645.64 and 6,611.64

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Solution

The fourth proportional to 19,762.20, 29,645.64 and 6,611.64 is: 9,918.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,762.20 : 29,645.64 = 6,611.64 : x
  2. Step 2: Convert to fraction form
    19,762.20/29,645.64 = 6,611.64/x
  3. Step 3: Cross multiply
    19,762.20x = 29,645.64 × 6,611.64
  4. Step 4: Simplify right side
    19,762.20x = 196,006,299.25
  5. Step 5: Solve for x
    x = 196,006,299.25/19,762.20
  6. Step 6: Final answer
    x = 9,918.24

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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.