Home / 43,571.52-65,355.12-13,990.80

Finding the Fourth Proportional to 43,571.52, 65,355.12 and 13,990.80

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Solution

The fourth proportional to 43,571.52, 65,355.12 and 13,990.80 is: 20,985.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,571.52 : 65,355.12 = 13,990.80 : x
  2. Step 2: Convert to fraction form
    43,571.52/65,355.12 = 13,990.80/x
  3. Step 3: Cross multiply
    43,571.52x = 65,355.12 × 13,990.80
  4. Step 4: Simplify right side
    43,571.52x = 914,370,412.90
  5. Step 5: Solve for x
    x = 914,370,412.90/43,571.52
  6. Step 6: Final answer
    x = 20,985.51

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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.