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Finding the Fourth Proportional to 23,986.47, 35,978.90 and 6,455.64

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Solution

The fourth proportional to 23,986.47, 35,978.90 and 6,455.64 is: 9,683.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,986.47 : 35,978.90 = 6,455.64 : x
  2. Step 2: Convert to fraction form
    23,986.47/35,978.90 = 6,455.64/x
  3. Step 3: Cross multiply
    23,986.47x = 35,978.90 × 6,455.64
  4. Step 4: Simplify right side
    23,986.47x = 232,266,793.72
  5. Step 5: Solve for x
    x = 232,266,793.72/23,986.47
  6. Step 6: Final answer
    x = 9,683.24

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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.