Home / 27,855.75-38,441.58-15,280.50

Finding the Fourth Proportional to 27,855.75, 38,441.58 and 15,280.50

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Solution

The fourth proportional to 27,855.75, 38,441.58 and 15,280.50 is: 21,087.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,855.75 : 38,441.58 = 15,280.50 : x
  2. Step 2: Convert to fraction form
    27,855.75/38,441.58 = 15,280.50/x
  3. Step 3: Cross multiply
    27,855.75x = 38,441.58 × 15,280.50
  4. Step 4: Simplify right side
    27,855.75x = 587,406,563.19
  5. Step 5: Solve for x
    x = 587,406,563.19/27,855.75
  6. Step 6: Final answer
    x = 21,087.44

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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.