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Finding the Fourth Proportional to 23,900.42, 35,855.15 and 7,890.86

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Solution

The fourth proportional to 23,900.42, 35,855.15 and 7,890.86 is: 11,837.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,900.42 : 35,855.15 = 7,890.86 : x
  2. Step 2: Convert to fraction form
    23,900.42/35,855.15 = 7,890.86/x
  3. Step 3: Cross multiply
    23,900.42x = 35,855.15 × 7,890.86
  4. Step 4: Simplify right side
    23,900.42x = 282,927,750.20
  5. Step 5: Solve for x
    x = 282,927,750.20/23,900.42
  6. Step 6: Final answer
    x = 11,837.78

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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.