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Finding the Fourth Proportional to 43,562.64, 65,352.48 and 13,978.20

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Solution

The fourth proportional to 43,562.64, 65,352.48 and 13,978.20 is: 20,970.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,562.64 : 65,352.48 = 13,978.20 : x
  2. Step 2: Convert to fraction form
    43,562.64/65,352.48 = 13,978.20/x
  3. Step 3: Cross multiply
    43,562.64x = 65,352.48 × 13,978.20
  4. Step 4: Simplify right side
    43,562.64x = 913,510,035.94
  5. Step 5: Solve for x
    x = 913,510,035.94/43,562.64
  6. Step 6: Final answer
    x = 20,970.03

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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.