Home / 11,985.20-17,980.72-4,589.52

Finding the Fourth Proportional to 11,985.20, 17,980.72 and 4,589.52

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Solution

The fourth proportional to 11,985.20, 17,980.72 and 4,589.52 is: 6,885.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,985.20 : 17,980.72 = 4,589.52 : x
  2. Step 2: Convert to fraction form
    11,985.20/17,980.72 = 4,589.52/x
  3. Step 3: Cross multiply
    11,985.20x = 17,980.72 × 4,589.52
  4. Step 4: Simplify right side
    11,985.20x = 82,522,874.05
  5. Step 5: Solve for x
    x = 82,522,874.05/11,985.20
  6. Step 6: Final answer
    x = 6,885.40

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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.