Home / 28,697.80-42,987.84-16,982.50

Finding the Fourth Proportional to 28,697.80, 42,987.84 and 16,982.50

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Solution

The fourth proportional to 28,697.80, 42,987.84 and 16,982.50 is: 25,438.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,697.80 : 42,987.84 = 16,982.50 : x
  2. Step 2: Convert to fraction form
    28,697.80/42,987.84 = 16,982.50/x
  3. Step 3: Cross multiply
    28,697.80x = 42,987.84 × 16,982.50
  4. Step 4: Simplify right side
    28,697.80x = 730,040,992.80
  5. Step 5: Solve for x
    x = 730,040,992.80/28,697.80
  6. Step 6: Final answer
    x = 25,438.92

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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.