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Finding the Fourth Proportional to 28,538.03, 42,809.09 and 8,814.03

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Solution

The fourth proportional to 28,538.03, 42,809.09 and 8,814.03 is: 13,221.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,538.03 : 42,809.09 = 8,814.03 : x
  2. Step 2: Convert to fraction form
    28,538.03/42,809.09 = 8,814.03/x
  3. Step 3: Cross multiply
    28,538.03x = 42,809.09 × 8,814.03
  4. Step 4: Simplify right side
    28,538.03x = 377,320,559.46
  5. Step 5: Solve for x
    x = 377,320,559.46/28,538.03
  6. Step 6: Final answer
    x = 13,221.68

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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.