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Finding the Fourth Proportional to 43,538.48, 65,305.80 and 13,957.80

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Solution

The fourth proportional to 43,538.48, 65,305.80 and 13,957.80 is: 20,936.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,538.48 : 65,305.80 = 13,957.80 : x
  2. Step 2: Convert to fraction form
    43,538.48/65,305.80 = 13,957.80/x
  3. Step 3: Cross multiply
    43,538.48x = 65,305.80 × 13,957.80
  4. Step 4: Simplify right side
    43,538.48x = 911,525,295.24
  5. Step 5: Solve for x
    x = 911,525,295.24/43,538.48
  6. Step 6: Final answer
    x = 20,936.08

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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.