Home / 28,591.12-42,786.88-21,825.08

Finding the Fourth Proportional to 28,591.12, 42,786.88 and 21,825.08

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Solution

The fourth proportional to 28,591.12, 42,786.88 and 21,825.08 is: 32,661.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,591.12 : 42,786.88 = 21,825.08 : x
  2. Step 2: Convert to fraction form
    28,591.12/42,786.88 = 21,825.08/x
  3. Step 3: Cross multiply
    28,591.12x = 42,786.88 × 21,825.08
  4. Step 4: Simplify right side
    28,591.12x = 933,827,078.95
  5. Step 5: Solve for x
    x = 933,827,078.95/28,591.12
  6. Step 6: Final answer
    x = 32,661.44

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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.