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Finding the Fourth Proportional to 11,235.51, 16,820.56 and 7,899.42

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Solution

The fourth proportional to 11,235.51, 16,820.56 and 7,899.42 is: 11,826.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,235.51 : 16,820.56 = 7,899.42 : x
  2. Step 2: Convert to fraction form
    11,235.51/16,820.56 = 7,899.42/x
  3. Step 3: Cross multiply
    11,235.51x = 16,820.56 × 7,899.42
  4. Step 4: Simplify right side
    11,235.51x = 132,872,741.03
  5. Step 5: Solve for x
    x = 132,872,741.03/11,235.51
  6. Step 6: Final answer
    x = 11,826.14

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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.