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Finding the Fourth Proportional to 28,805.42, 43,215.97 and 8,814.47

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Solution

The fourth proportional to 28,805.42, 43,215.97 and 8,814.47 is: 13,224.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,805.42 : 43,215.97 = 8,814.47 : x
  2. Step 2: Convert to fraction form
    28,805.42/43,215.97 = 8,814.47/x
  3. Step 3: Cross multiply
    28,805.42x = 43,215.97 × 8,814.47
  4. Step 4: Simplify right side
    28,805.42x = 380,925,871.09
  5. Step 5: Solve for x
    x = 380,925,871.09/28,805.42
  6. Step 6: Final answer
    x = 13,224.10

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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.