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Finding the Fourth Proportional to 19,992.32, 29,950.32 and 11,200.64

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Solution

The fourth proportional to 19,992.32, 29,950.32 and 11,200.64 is: 16,779.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,992.32 : 29,950.32 = 11,200.64 : x
  2. Step 2: Convert to fraction form
    19,992.32/29,950.32 = 11,200.64/x
  3. Step 3: Cross multiply
    19,992.32x = 29,950.32 × 11,200.64
  4. Step 4: Simplify right side
    19,992.32x = 335,462,752.20
  5. Step 5: Solve for x
    x = 335,462,752.20/19,992.32
  6. Step 6: Final answer
    x = 16,779.58

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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.