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Finding the Fourth Proportional to 28,357.50, 42,537.99 and 8,637.54

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Solution

The fourth proportional to 28,357.50, 42,537.99 and 8,637.54 is: 12,956.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,357.50 : 42,537.99 = 8,637.54 : x
  2. Step 2: Convert to fraction form
    28,357.50/42,537.99 = 8,637.54/x
  3. Step 3: Cross multiply
    28,357.50x = 42,537.99 × 8,637.54
  4. Step 4: Simplify right side
    28,357.50x = 367,423,590.14
  5. Step 5: Solve for x
    x = 367,423,590.14/28,357.50
  6. Step 6: Final answer
    x = 12,956.84

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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.