Home / 39,832.80-54,986.28-28,355.12

Finding the Fourth Proportional to 39,832.80, 54,986.28 and 28,355.12

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Solution

The fourth proportional to 39,832.80, 54,986.28 and 28,355.12 is: 39,142.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,832.80 : 54,986.28 = 28,355.12 : x
  2. Step 2: Convert to fraction form
    39,832.80/54,986.28 = 28,355.12/x
  3. Step 3: Cross multiply
    39,832.80x = 54,986.28 × 28,355.12
  4. Step 4: Simplify right side
    39,832.80x = 1,559,142,567.75
  5. Step 5: Solve for x
    x = 1,559,142,567.75/39,832.80
  6. Step 6: Final answer
    x = 39,142.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.