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Finding the Fourth Proportional to 28,691.37, 42,741.18 and 27,820.89

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Solution

The fourth proportional to 28,691.37, 42,741.18 and 27,820.89 is: 41,444.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,691.37 : 42,741.18 = 27,820.89 : x
  2. Step 2: Convert to fraction form
    28,691.37/42,741.18 = 27,820.89/x
  3. Step 3: Cross multiply
    28,691.37x = 42,741.18 × 27,820.89
  4. Step 4: Simplify right side
    28,691.37x = 1,189,097,667.25
  5. Step 5: Solve for x
    x = 1,189,097,667.25/28,691.37
  6. Step 6: Final answer
    x = 41,444.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.