Home / 43,100.25-64,650.39-13,520.40

Finding the Fourth Proportional to 43,100.25, 64,650.39 and 13,520.40

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Solution

The fourth proportional to 43,100.25, 64,650.39 and 13,520.40 is: 20,280.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,100.25 : 64,650.39 = 13,520.40 : x
  2. Step 2: Convert to fraction form
    43,100.25/64,650.39 = 13,520.40/x
  3. Step 3: Cross multiply
    43,100.25x = 64,650.39 × 13,520.40
  4. Step 4: Simplify right side
    43,100.25x = 874,099,132.96
  5. Step 5: Solve for x
    x = 874,099,132.96/43,100.25
  6. Step 6: Final answer
    x = 20,280.60

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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.